31312000021311 has 16 divisors (see below), whose sum is σ = 46396371796320. Its totient is φ = 20870966053440.

The previous prime is 31312000021277. The next prime is 31312000021331. The reversal of 31312000021311 is 11312000021313.

31312000021311 is a `hidden beast` number, since 3 + 131 + 200 + 0 + 0 + 21 + 311 = 666.

It is not a de Polignac number, because 31312000021311 - 2³⁵ = 31277640282943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312000021331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102640080 + ... + 102944693.

It is an arithmetic number, because the mean of its divisors is an integer number (2899773237270).

Almost surely, 2^{31312000021311} is an apocalyptic number.

31312000021311 is a deficient number, since it is larger than the sum of its proper divisors (15084371775009).

31312000021311 is a wasteful number, since it uses less digits than its factorization.

31312000021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205590423 (or 205590417 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31312000021311 its reverse (11312000021313), we get a palindrome (42624000042624).

The spelling of 31312000021311 in words is "thirty-one trillion, three hundred twelve billion, twenty-one thousand, three hundred eleven".