31275212 has 12 divisors (see below), whose sum is σ = 56211120. Its totient is φ = 15214896.

The previous prime is 31275199. The next prime is 31275221. The reversal of 31275212 is 21257213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105512 + ... + 105807.

It is an arithmetic number, because the mean of its divisors is an integer number (4684260).

Almost surely, 2^31275212 is an apocalyptic number.

It is an amenable number.

31275212 is a deficient number, since it is larger than the sum of its proper divisors (24935908).

31275212 is a wasteful number, since it uses less digits than its factorization.

31275212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211360 (or 211358 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 31275212 is about 5592.4245189363. The cubic root of 31275212 is about 315.0649467159.

The spelling of 31275212 in words is "thirty-one million, two hundred seventy-five thousand, two hundred twelve".