31216464204 has 24 divisors (see below), whose sum is σ = 73545588480. Its totient is φ = 10304463504.

The previous prime is 31216464197. The next prime is 31216464233. The reversal of 31216464204 is 40246461213.

It is a happy number.

It is a super-2 number, since 2×31216464204² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12626784 + ... + 12629255.

It is an arithmetic number, because the mean of its divisors is an integer number (3064399520).

Almost surely, 2^31216464204 is an apocalyptic number.

It is an amenable number.

31216464204 is an abundant number, since it is smaller than the sum of its proper divisors (42329124276).

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

31216464204 is a wasteful number, since it uses less digits than its factorization.

31216464204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25256149 (or 25256147 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 31216464204 in words is "thirty-one billion, two hundred sixteen million, four hundred sixty-four thousand, two hundred four".