131312512 has 32 divisors (see below), whose sum is σ = 265302000. Its totient is φ = 64727040.

The previous prime is 131312491. The next prime is 131312521. The reversal of 131312512 is 215213131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 131312512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1864 + ... + 16312.

Almost surely, 2^131312512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131312512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132651000).

131312512 is an abundant number, since it is smaller than the sum of its proper divisors (133989488).

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

131312512 is an equidigital number, since it uses as much as digits as its factorization.

131312512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14534 (or 14522 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 131312512 is about 11459.1671599641. The cubic root of 131312512 is about 508.2788474672.

Adding to 131312512 its reverse (215213131), we get a palindrome (346525643).

The spelling of 131312512 in words is "one hundred thirty-one million, three hundred twelve thousand, five hundred twelve".