31023321020312 has 16 divisors (see below), whose sum is σ = 58525590270840. Its totient is φ = 15416496948096.

The previous prime is 31023321020249. The next prime is 31023321020317. The reversal of 31023321020312 is 21302012332013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023321020317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11895443873 + ... + 11895446480.

Almost surely, 2^{31023321020312} is an apocalyptic number.

It is an amenable number.

31023321020312 is a deficient number, since it is larger than the sum of its proper divisors (27502269250528).

31023321020312 is a wasteful number, since it uses less digits than its factorization.

31023321020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23790890522 (or 23790890518 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31023321020312 its reverse (21302012332013), we get a palindrome (52325333352325).

The spelling of 31023321020312 in words is "thirty-one trillion, twenty-three billion, three hundred twenty-one million, twenty thousand, three hundred twelve".