131352440 has 32 divisors (see below), whose sum is σ = 297540000. Its totient is φ = 52185984.

The previous prime is 131352439. The next prime is 131352509. The reversal of 131352440 is 44253131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5060 + ... + 16979.

It is an arithmetic number, because the mean of its divisors is an integer number (9298125).

Almost surely, 2^131352440 is an apocalyptic number.

131352440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131352440 is an abundant number, since it is smaller than the sum of its proper divisors (166187560).

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

131352440 is a wasteful number, since it uses less digits than its factorization.

131352440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22199 (or 22195 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 131352440 is about 11460.9092134961. The cubic root of 131352440 is about 508.3303594439.

The spelling of 131352440 in words is "one hundred thirty-one million, three hundred fifty-two thousand, four hundred forty".