31214512 has 20 divisors (see below), whose sum is σ = 69118096. Its totient is φ = 13377600.

The previous prime is 31214507. The next prime is 31214531. The reversal of 31214512 is 21541213.

It is a self number, because there is not a number n which added to its sum of digits gives 31214512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139239 + ... + 139462.

Almost surely, 2^31214512 is an apocalyptic number.

It is an amenable number.

31214512 is an abundant number, since it is smaller than the sum of its proper divisors (37903584).

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

31214512 is a wasteful number, since it uses less digits than its factorization.

31214512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278716 (or 278710 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 31214512 is about 5586.9948988701. The cubic root of 31214512 is about 314.8609851026.

Adding to 31214512 its reverse (21541213), we get a palindrome (52755725).

The spelling of 31214512 in words is "thirty-one million, two hundred fourteen thousand, five hundred twelve".