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1230200131 = 13711178039
BaseRepresentation
bin100100101010011…
…0101110101000011
310011201211122022211
41021110311311003
510004412401011
6322023242551
742325346206
oct11124656503
93151748284
101230200131
11581463626
122a3ba9457
13167b39594
14b955193d
1573003b21
hex49535d43

1230200131 has 8 divisors (see below), whose sum is σ = 1240443360. Its totient is φ = 1219975488.

The previous prime is 1230200129. The next prime is 1230200141. The reversal of 1230200131 is 1310020321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230200131 - 21 = 1230200129 is a prime.

It is a super-2 number, since 2×12302001312 = 3026784724624834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230200141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149010 + ... + 157048.

It is an arithmetic number, because the mean of its divisors is an integer number (155055420).

Almost surely, 21230200131 is an apocalyptic number.

1230200131 is a deficient number, since it is larger than the sum of its proper divisors (10243229).

1230200131 is a wasteful number, since it uses less digits than its factorization.

1230200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1230200131 is about 35074.2089148137. The cubic root of 1230200131 is about 1071.4993772745.

Adding to 1230200131 its reverse (1310020321), we get a palindrome (2540220452).

The spelling of 1230200131 in words is "one billion, two hundred thirty million, two hundred thousand, one hundred thirty-one".

Divisors: 1 137 1117 8039 153029 1101343 8979563 1230200131