31347411864 has 32 divisors (see below), whose sum is σ = 78586848000. Its totient is φ = 10420028192.

The previous prime is 31347411833. The next prime is 31347411869. The reversal of 31347411864 is 46811474313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31347411869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810524 + ... + 1827755.

It is an arithmetic number, because the mean of its divisors is an integer number (2455839000).

Almost surely, 2^31347411864 is an apocalyptic number.

It is an amenable number.

31347411864 is an abundant number, since it is smaller than the sum of its proper divisors (47239436136).

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

31347411864 is a wasteful number, since it uses less digits than its factorization.

31347411864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638647 (or 3638643 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

It can be divided in two parts, 31347 and 411864, that added together give a triangular number (443211 = T₉₄₁).

The spelling of 31347411864 in words is "thirty-one billion, three hundred forty-seven million, four hundred eleven thousand, eight hundred sixty-four".