31030012 has 24 divisors (see below), whose sum is σ = 58662800. Its totient is φ = 14276736.

The previous prime is 31030001. The next prime is 31030067. The reversal of 31030012 is 21003013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20539 + ... + 21997.

Almost surely, 2^31030012 is an apocalyptic number.

It is an amenable number.

31030012 is a deficient number, since it is larger than the sum of its proper divisors (27632788).

31030012 is a wasteful number, since it uses less digits than its factorization.

31030012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 31030012 is about 5570.4588679928. The cubic root of 31030012 is about 314.2394079356.

Adding to 31030012 its reverse (21003013), we get a palindrome (52033025).

The spelling of 31030012 in words is "thirty-one million, thirty thousand, twelve".