131955972 has 24 divisors (see below), whose sum is σ = 326009376. Its totient is φ = 41397888.

The previous prime is 131955961. The next prime is 131955977. The reversal of 131955972 is 279559131.

It is not an unprimeable number, because it can be changed into a prime (131955977) 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, 323218 + ... + 323625.

It is an arithmetic number, because the mean of its divisors is an integer number (13583724).

Almost surely, 2^131955972 is an apocalyptic number.

131955972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131955972 is an abundant number, since it is smaller than the sum of its proper divisors (194053404).

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

131955972 is a wasteful number, since it uses less digits than its factorization.

131955972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646867 (or 646865 counting only the distinct ones).

The product of its digits is 85050, while the sum is 42.

The square root of 131955972 is about 11487.2090605160. The cubic root of 131955972 is about 509.1077208541.

It can be divided in two parts, 1319 and 55972, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 131955972 in words is "one hundred thirty-one million, nine hundred fifty-five thousand, nine hundred seventy-two".