31113312211210 has 16 divisors (see below), whose sum is σ = 56004474061800. Its totient is φ = 12445211088576.

The previous prime is 31113312211181. The next prime is 31113312211213. The reversal of 31113312211210 is 1211221331113.

It can be written as a sum of positive squares in 4 ways, for example, as 22328923171801 + 8784389039409 = 4725349^2 + 2963847^2 .

It is not an unprimeable number, because it can be changed into a prime (31113312211213) by changing a digit.

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, 13071705 + ... + 15267484.

Almost surely, 2^{31113312211210} is an apocalyptic number.

31113312211210 is a deficient number, since it is larger than the sum of its proper divisors (24891161850590).

31113312211210 is a wasteful number, since it uses less digits than its factorization.

31113312211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28448985.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 31113312211210 its reverse (1211221331113), we get a palindrome (32324533542323).

The spelling of 31113312211210 in words is "thirty-one trillion, one hundred thirteen billion, three hundred twelve million, two hundred eleven thousand, two hundred ten".