31214768 has 80 divisors (see below), whose sum is σ = 69328896. Its totient is φ = 13512960.

The previous prime is 31214753. The next prime is 31214779. The reversal of 31214768 is 86741213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303005 + ... + 303107.

Almost surely, 2^31214768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31214768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34664448).

31214768 is an abundant number, since it is smaller than the sum of its proper divisors (38114128).

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

31214768 is a wasteful number, since it uses less digits than its factorization.

31214768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 196 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 31214768 is about 5587.0178091715. The cubic root of 31214768 is about 314.8618458582.

The spelling of 31214768 in words is "thirty-one million, two hundred fourteen thousand, seven hundred sixty-eight".