31323055544520 has 64 divisors (see below), whose sum is σ = 93993194931840. Its totient is φ = 8350678963200.

The previous prime is 31323055544491. The next prime is 31323055544549. The reversal of 31323055544520 is 2544555032313.

It is an interprime number because it is at equal distance from previous prime (31323055544491) and next prime (31323055544549).

It is a super-2 number, since 2×31323055544520² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32901361 + ... + 33840000.

It is an arithmetic number, because the mean of its divisors is an integer number (1468643670810).

Almost surely, 2^{31323055544520} is an apocalyptic number.

31323055544520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31323055544520 is an abundant number, since it is smaller than the sum of its proper divisors (62670139387320).

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

31323055544520 is a wasteful number, since it uses less digits than its factorization.

31323055544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66745286 (or 66745282 counting only the distinct ones).

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

The spelling of 31323055544520 in words is "thirty-one trillion, three hundred twenty-three billion, fifty-five million, five hundred forty-four thousand, five hundred twenty".