31312111010 has 16 divisors (see below), whose sum is σ = 56418349176. Its totient is φ = 12512277888.

The previous prime is 31312110959. The next prime is 31312111021. The reversal of 31312111010 is 1011121313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20643080329 + 10669030681 = 143677^2 + 103291^2 .

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, 1560347 + ... + 1580286.

Almost surely, 2^31312111010 is an apocalyptic number.

31312111010 is a deficient number, since it is larger than the sum of its proper divisors (25106238166).

31312111010 is a wasteful number, since it uses less digits than its factorization.

31312111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141637.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31312111010 its reverse (1011121313), we get a palindrome (32323232323).

The spelling of 31312111010 in words is "thirty-one billion, three hundred twelve million, one hundred eleven thousand, ten".