31031676540 has 72 divisors (see below), whose sum is σ = 94193281728. Its totient is φ = 8269499520.

The previous prime is 31031676523. The next prime is 31031676551. The reversal of 31031676540 is 4567613013.

31031676540 is a `hidden beast` number, since 3 + 10 + 31 + 6 + 76 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31031676495 and 31031676504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211005 + ... + 326475.

It is an arithmetic number, because the mean of its divisors is an integer number (1308240024).

Almost surely, 2^31031676540 is an apocalyptic number.

31031676540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31031676540 is an abundant number, since it is smaller than the sum of its proper divisors (63161605188).

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

31031676540 is a wasteful number, since it uses less digits than its factorization.

31031676540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116979 (or 116974 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 31031676540 in words is "thirty-one billion, thirty-one million, six hundred seventy-six thousand, five hundred forty".