31302232320212 has 24 divisors (see below), whose sum is σ = 63307885596480. Its totient is φ = 13264509360960.

The previous prime is 31302232320199. The next prime is 31302232320259. The reversal of 31302232320212 is 21202323220313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6280541714 + ... + 6280546697.

It is an arithmetic number, because the mean of its divisors is an integer number (2637828566520).

Almost surely, 2^{31302232320212} is an apocalyptic number.

It is an amenable number.

31302232320212 is an abundant number, since it is smaller than the sum of its proper divisors (32005653276268).

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

31302232320212 is a wasteful number, since it uses less digits than its factorization.

31302232320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561088511 (or 12561088509 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 31302232320212 its reverse (21202323220313), we get a palindrome (52504555540525).

The spelling of 31302232320212 in words is "thirty-one trillion, three hundred two billion, two hundred thirty-two million, three hundred twenty thousand, two hundred twelve".