131365612 has 48 divisors (see below), whose sum is σ = 267805440. Its totient is φ = 55225152.

The previous prime is 131365609. The next prime is 131365649. The reversal of 131365612 is 216563131.

It is a super-2 number, since 2×131365612² = 34513848032269088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488214 + ... + 488482.

It is an arithmetic number, because the mean of its divisors is an integer number (5579280).

Almost surely, 2^131365612 is an apocalyptic number.

It is an amenable number.

131365612 is an abundant number, since it is smaller than the sum of its proper divisors (136439828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131365612 is a wasteful number, since it uses less digits than its factorization.

131365612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

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

The square root of 131365612 is about 11461.4838480888. The cubic root of 131365612 is about 508.3473506362.

The spelling of 131365612 in words is "one hundred thirty-one million, three hundred sixty-five thousand, six hundred twelve".