31313123123210 has 32 divisors (see below), whose sum is σ = 58187349609984. Its totient is φ = 12120053400000.

The previous prime is 31313123123201. The next prime is 31313123123273. The reversal of 31313123123210 is 1232132131313.

It is a self number, because there is not a number n which added to its sum of digits gives 31313123123210.

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, 1554236 + ... + 8064855.

It is an arithmetic number, because the mean of its divisors is an integer number (1818354675312).

Almost surely, 2^{31313123123210} is an apocalyptic number.

31313123123210 is a deficient number, since it is larger than the sum of its proper divisors (26874226486774).

31313123123210 is a wasteful number, since it uses less digits than its factorization.

31313123123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9629630.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31313123123210 its reverse (1232132131313), we get a palindrome (32545255254523).

The spelling of 31313123123210 in words is "thirty-one trillion, three hundred thirteen billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred ten".