131953992 has 16 divisors (see below), whose sum is σ = 329885040. Its totient is φ = 43984656.

The previous prime is 131953961. The next prime is 131953999. The reversal of 131953992 is 299359131.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (131953999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749018 + ... + 2749065.

It is an arithmetic number, because the mean of its divisors is an integer number (20617815).

Almost surely, 2^131953992 is an apocalyptic number.

131953992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131953992 is an abundant number, since it is smaller than the sum of its proper divisors (197931048).

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

131953992 is a wasteful number, since it uses less digits than its factorization.

131953992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498092 (or 5498088 counting only the distinct ones).

The product of its digits is 65610, while the sum is 42.

The square root of 131953992 is about 11487.1228773788. The cubic root of 131953992 is about 509.1051744534.

The spelling of 131953992 in words is "one hundred thirty-one million, nine hundred fifty-three thousand, nine hundred ninety-two".