131486440 has 32 divisors (see below), whose sum is σ = 296768160. Its totient is φ = 52430400.

The previous prime is 131486437. The next prime is 131486447. The reversal of 131486440 is 44684131.

It is not an unprimeable number, because it can be changed into a prime (131486447) 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, 8275 + ... + 18205.

It is an arithmetic number, because the mean of its divisors is an integer number (9274005).

Almost surely, 2^131486440 is an apocalyptic number.

131486440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131486440 is an abundant number, since it is smaller than the sum of its proper divisors (165281720).

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

131486440 is a wasteful number, since it uses less digits than its factorization.

131486440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10273 (or 10269 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 131486440 is about 11466.7536818404. The cubic root of 131486440 is about 508.5031594777.

The spelling of 131486440 in words is "one hundred thirty-one million, four hundred eighty-six thousand, four hundred forty".