31324012 has 24 divisors (see below), whose sum is σ = 56981120. Its totient is φ = 15050880.

The previous prime is 31324003. The next prime is 31324061. The reversal of 31324012 is 21042313.

It is a happy number.

It is a super-2 number, since 2×31324012² = 1962387455552288, which 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, 18664 + ... + 20272.

Almost surely, 2^31324012 is an apocalyptic number.

It is an amenable number.

31324012 is a deficient number, since it is larger than the sum of its proper divisors (25657108).

31324012 is a wasteful number, since it uses less digits than its factorization.

31324012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31324012 is about 5596.7858633326. The cubic root of 31324012 is about 315.2287311584.

Adding to 31324012 its reverse (21042313), we get a palindrome (52366325).

The spelling of 31324012 in words is "thirty-one million, three hundred twenty-four thousand, twelve".