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1302201131 = 71171313761
BaseRepresentation
bin100110110011110…
…0000001100101011
310100202022200010112
41031213200030223
510131330414011
6333114404535
744161345520
oct11547401453
93322280115
101302201131
11609070a90
1230413074b
13179a28b1a
14c4d35147
15794c758b
hex4d9e032b

1302201131 has 32 divisors (see below), whose sum is σ = 1653820416. Its totient is φ = 995904000.

The previous prime is 1302201101. The next prime is 1302201133. The reversal of 1302201131 is 1311022031.

It is not a de Polignac number, because 1302201131 - 214 = 1302184747 is a prime.

It is a super-2 number, since 2×13022011312 = 3391455571155358322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1302201133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1710791 + ... + 1711551.

It is an arithmetic number, because the mean of its divisors is an integer number (51681888).

Almost surely, 21302201131 is an apocalyptic number.

1302201131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1302201131 is a deficient number, since it is larger than the sum of its proper divisors (351619285).

1302201131 is a wasteful number, since it uses less digits than its factorization.

1302201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1302201131 is about 36086.0240397858. The cubic root of 1302201131 is about 1092.0085097643.

Adding to 1302201131 its reverse (1311022031), we get a palindrome (2613223162).

Subtracting 1302201131 from its reverse (1311022031), we obtain a square (8820900 = 29702).

The spelling of 1302201131 in words is "one billion, three hundred two million, two hundred one thousand, one hundred thirty-one".

Divisors: 1 7 11 71 77 313 497 761 781 2191 3443 5327 5467 8371 22223 24101 54031 58597 155561 238193 244453 378217 594341 1667351 1711171 2620123 4160387 16911703 18340861 118381921 186028733 1302201131