131331157212 has 24 divisors (see below), whose sum is σ = 306634470912. Its totient is φ = 43749180400.

The previous prime is 131331157183. The next prime is 131331157253. The reversal of 131331157212 is 212751133131.

It is a super-2 number, since 2×131331157212² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131331157212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3464364 + ... + 3502067.

It is an arithmetic number, because the mean of its divisors is an integer number (12776436288).

Almost surely, 2^131331157212 is an apocalyptic number.

131331157212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131331157212 is an abundant number, since it is smaller than the sum of its proper divisors (175303313700).

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

131331157212 is a wasteful number, since it uses less digits than its factorization.

131331157212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968009 (or 6968007 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The spelling of 131331157212 in words is "one hundred thirty-one billion, three hundred thirty-one million, one hundred fifty-seven thousand, two hundred twelve".