31352240355540 has 96 divisors (see below), whose sum is σ = 94540229857920. Its totient is φ = 7717379314176.

The previous prime is 31352240355517. The next prime is 31352240355587. The reversal of 31352240355540 is 4555304225313.

It is a junction number, because it is equal to n+sod(n) for n = 31352240355492 and 31352240355501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79377822 + ... + 79771818.

It is an arithmetic number, because the mean of its divisors is an integer number (984794061020).

Almost surely, 2^{31352240355540} is an apocalyptic number.

31352240355540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31352240355540 is an abundant number, since it is smaller than the sum of its proper divisors (63187989502380).

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

31352240355540 is a wasteful number, since it uses less digits than its factorization.

31352240355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496041 (or 496039 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 42.

The spelling of 31352240355540 in words is "thirty-one trillion, three hundred fifty-two billion, two hundred forty million, three hundred fifty-five thousand, five hundred forty".