31004012 has 12 divisors (see below), whose sum is σ = 58430736. Its totient is φ = 14309520.

The previous prime is 31004011. The next prime is 31004027. The reversal of 31004012 is 21040013.

It is a happy number.

It is a super-2 number, since 2×31004012² = 1922497520192288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003984 and 31004002.

It is not an unprimeable number, because it can be changed into a prime (31004011) by changing a digit.

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, 298064 + ... + 298167.

It is an arithmetic number, because the mean of its divisors is an integer number (4869228).

Almost surely, 2^31004012 is an apocalyptic number.

It is an amenable number.

31004012 is a deficient number, since it is larger than the sum of its proper divisors (27426724).

31004012 is a wasteful number, since it uses less digits than its factorization.

31004012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596248 (or 596246 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 31004012 is about 5568.1246394096. The cubic root of 31004012 is about 314.1516165031.

Adding to 31004012 its reverse (21040013), we get a palindrome (52044025).

The spelling of 31004012 in words is "thirty-one million, four thousand, twelve".