131356612 has 24 divisors (see below), whose sum is σ = 232407000. Its totient is φ = 64958976.

The previous prime is 131356601. The next prime is 131356619. The reversal of 131356612 is 216653131.

It can be written as a sum of positive squares in 4 ways, for example, as 1943236 + 129413376 = 1394^2 + 11376^2 .

It is a super-2 number, since 2×131356612² = 34509119032237088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131356619) 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, 257814 + ... + 258322.

It is an arithmetic number, because the mean of its divisors is an integer number (9683625).

Almost surely, 2^131356612 is an apocalyptic number.

It is an amenable number.

131356612 is a deficient number, since it is larger than the sum of its proper divisors (101050388).

131356612 is a wasteful number, since it uses less digits than its factorization.

131356612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095 (or 1093 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 131356612 is about 11461.0912220434. The cubic root of 131356612 is about 508.3357412290.

The spelling of 131356612 in words is "one hundred thirty-one million, three hundred fifty-six thousand, six hundred twelve".