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131212010 = 2523570487
BaseRepresentation
bin1111101001000…
…10001011101010
3100010220021001002
413310202023222
5232042241020
621004155002
73152166206
oct764421352
9303807032
10131212010
116807a586
1237b38a62
1321251357
14135d7b06
15b7bc975
hex7d222ea

131212010 has 16 divisors (see below), whose sum is σ = 246450816. Its totient is φ = 50202768.

The previous prime is 131211989. The next prime is 131212019. The reversal of 131212010 is 10212131.

It is a junction number, because it is equal to n+sod(n) for n = 131211982 and 131212000.

It is not an unprimeable number, because it can be changed into a prime (131212019) 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, 285014 + ... + 285473.

It is an arithmetic number, because the mean of its divisors is an integer number (15403176).

Almost surely, 2131212010 is an apocalyptic number.

131212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131212010 is a deficient number, since it is larger than the sum of its proper divisors (115238806).

131212010 is a wasteful number, since it uses less digits than its factorization.

131212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570517.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131212010 is about 11454.7810978648. The cubic root of 131212010 is about 508.1491414250.

Adding to 131212010 its reverse (10212131), we get a palindrome (141424141).

The spelling of 131212010 in words is "one hundred thirty-one million, two hundred twelve thousand, ten".

Divisors: 1 2 5 10 23 46 115 230 570487 1140974 2852435 5704870 13121201 26242402 65606005 131212010