131136612 has 24 divisors (see below), whose sum is σ = 306333216. Its totient is φ = 43662528.

The previous prime is 131136611. The next prime is 131136617. The reversal of 131136612 is 216631131.

It is a super-2 number, since 2×131136612² = 34393622013677088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (131136611) 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, 5703 + ... + 17169.

It is an arithmetic number, because the mean of its divisors is an integer number (12763884).

Almost surely, 2^131136612 is an apocalyptic number.

131136612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131136612 is an abundant number, since it is smaller than the sum of its proper divisors (175196604).

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

131136612 is a wasteful number, since it uses less digits than its factorization.

131136612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427 (or 12425 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 131136612 is about 11451.4895101030. The cubic root of 131136612 is about 508.0517906567.

Adding to 131136612 its reverse (216631131), we get a palindrome (347767743).

The spelling of 131136612 in words is "one hundred thirty-one million, one hundred thirty-six thousand, six hundred twelve".