131631473440 has 48 divisors (see below), whose sum is σ = 312716738880. Its totient is φ = 52358429440.

The previous prime is 131631473423. The next prime is 131631473497. The reversal of 131631473440 is 44374136131.

It is a super-3 number, since 3×131631473440³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131631473440.

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, 2269396 + ... + 2326675.

It is an arithmetic number, because the mean of its divisors is an integer number (6514932060).

Almost surely, 2^131631473440 is an apocalyptic number.

131631473440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131631473440 is an abundant number, since it is smaller than the sum of its proper divisors (181085265440).

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

131631473440 is a wasteful number, since it uses less digits than its factorization.

131631473440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596265 (or 4596257 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 131631473440 in words is "one hundred thirty-one billion, six hundred thirty-one million, four hundred seventy-three thousand, four hundred forty".