31864354488331 has 16 divisors (see below), whose sum is σ = 32062311855360. Its totient is φ = 31667042547360.

The previous prime is 31864354488287. The next prime is 31864354488349. The reversal of 31864354488331 is 13388445346813.

It is a cyclic number.

It is not a de Polignac number, because 31864354488331 - 2²⁹ = 31863817617419 is a prime.

It is a super-2 number, since 2×31864354488331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31864354488331.

It is not an unprimeable number, because it can be changed into a prime (31864354438331) 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, 310556820 + ... + 310659406.

It is an arithmetic number, because the mean of its divisors is an integer number (2003894490960).

Almost surely, 2^{31864354488331} is an apocalyptic number.

31864354488331 is a deficient number, since it is larger than the sum of its proper divisors (197957367029).

31864354488331 is a wasteful number, since it uses less digits than its factorization.

31864354488331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105714.

The product of its digits is 79626240, while the sum is 61.

The spelling of 31864354488331 in words is "thirty-one trillion, eight hundred sixty-four billion, three hundred fifty-four million, four hundred eighty-eight thousand, three hundred thirty-one".