31312112012330 has 32 divisors (see below), whose sum is σ = 58181799951360. Its totient is φ = 12120426783360.

The previous prime is 31312112012261. The next prime is 31312112012369. The reversal of 31312112012330 is 3321021121313.

It is a junction number, because it is equal to n+sod(n) for n = 31312112012296 and 31312112012305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8096342 + ... + 11321438.

It is an arithmetic number, because the mean of its divisors is an integer number (1818181248480).

Almost surely, 2^{31312112012330} is an apocalyptic number.

31312112012330 is a deficient number, since it is larger than the sum of its proper divisors (26869687939030).

31312112012330 is a wasteful number, since it uses less digits than its factorization.

31312112012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256454.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31312112012330 its reverse (3321021121313), we get a palindrome (34633133133643).

The spelling of 31312112012330 in words is "thirty-one trillion, three hundred twelve billion, one hundred twelve million, twelve thousand, three hundred thirty".