31312010 has 16 divisors (see below), whose sum is σ = 56478816. Its totient is φ = 12498768.

The previous prime is 31312007. The next prime is 31312033. The reversal of 31312010 is 1021313.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 31311982 and 31312000.

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 7 ways as a sum of consecutive naturals, for example, 2237 + ... + 8223.

It is an arithmetic number, because the mean of its divisors is an integer number (3529926).

Almost surely, 2^31312010 is an apocalyptic number.

31312010 is a deficient number, since it is larger than the sum of its proper divisors (25166806).

31312010 is a wasteful number, since it uses less digits than its factorization.

31312010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 31312010 is about 5595.7135380575. The cubic root of 31312010 is about 315.1884653655.

Adding to 31312010 its reverse (1021313), we get a palindrome (32333323).

The spelling of 31312010 in words is "thirty-one million, three hundred twelve thousand, ten".