31302200211312 has 80 divisors (see below), whose sum is σ = 85123315152000. Its totient is φ = 9884522449152.

The previous prime is 31302200211283. The next prime is 31302200211343. The reversal of 31302200211312 is 21311200220313.

It is a super-2 number, since 2×31302200211312² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 23369614 + ... + 24672722.

It is an arithmetic number, because the mean of its divisors is an integer number (1064041439400).

Almost surely, 2^{31302200211312} is an apocalyptic number.

It is an amenable number.

31302200211312 is an abundant number, since it is smaller than the sum of its proper divisors (53821114940688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31302200211312 is a wasteful number, since it uses less digits than its factorization.

31302200211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329478 (or 1329472 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31302200211312 its reverse (21311200220313), we get a palindrome (52613400431625).

Subtracting from 31302200211312 its reverse (21311200220313), we obtain a palindrome (9990999990999).

The spelling of 31302200211312 in words is "thirty-one trillion, three hundred two billion, two hundred million, two hundred eleven thousand, three hundred twelve".