131997460 has 48 divisors (see below), whose sum is σ = 330575616. Its totient is φ = 43287552.

The previous prime is 131997457. The next prime is 131997497. The reversal of 131997460 is 64799131.

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, 17277 + ... + 23716.

It is an arithmetic number, because the mean of its divisors is an integer number (6886992).

Almost surely, 2^131997460 is an apocalyptic number.

131997460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131997460 is an abundant number, since it is smaller than the sum of its proper divisors (198578156).

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

131997460 is a wasteful number, since it uses less digits than its factorization.

131997460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41032 (or 41030 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 131997460 is about 11489.0147532328. The cubic root of 131997460 is about 509.1610710929.

The spelling of 131997460 in words is "one hundred thirty-one million, nine hundred ninety-seven thousand, four hundred sixty".