31868226216 has 48 divisors (see below), whose sum is σ = 90852403200. Its totient is φ = 10063649952.

The previous prime is 31868226209. The next prime is 31868226217. The reversal of 31868226216 is 61262286813.

31868226216 is a `hidden beast` number, since 3 + 18 + 6 + 8 + 2 + 2 + 621 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31868226217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11646376 + ... + 11649111.

It is an arithmetic number, because the mean of its divisors is an integer number (1892758400).

Almost surely, 2^31868226216 is an apocalyptic number.

31868226216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31868226216 is an abundant number, since it is smaller than the sum of its proper divisors (58984176984).

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

31868226216 is a wasteful number, since it uses less digits than its factorization.

31868226216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23295518 (or 23295511 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 31868226216 in words is "thirty-one billion, eight hundred sixty-eight million, two hundred twenty-six thousand, two hundred sixteen".