131312532 has 48 divisors (see below), whose sum is σ = 330728832. Its totient is φ = 40310400.

The previous prime is 131312527. The next prime is 131312567. The reversal of 131312532 is 235213131.

It is a junction number, because it is equal to n+sod(n) for n = 131312499 and 131312508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100282 + ... + 101582.

It is an arithmetic number, because the mean of its divisors is an integer number (6890184).

Almost surely, 2^131312532 is an apocalyptic number.

131312532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131312532 is an abundant number, since it is smaller than the sum of its proper divisors (199416300).

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

131312532 is a wasteful number, since it uses less digits than its factorization.

131312532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 1966 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 131312532 is about 11459.1680326278. The cubic root of 131312532 is about 508.2788732722.

Adding to 131312532 its reverse (235213131), we get a palindrome (366525663).

The spelling of 131312532 in words is "one hundred thirty-one million, three hundred twelve thousand, five hundred thirty-two".