31302620312 has 16 divisors (see below), whose sum is σ = 58696081800. Its totient is φ = 15650331840.

The previous prime is 31302620309. The next prime is 31302620317. The reversal of 31302620312 is 21302620313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302620317) 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, 23987 + ... + 251357.

Almost surely, 2^31302620312 is an apocalyptic number.

It is an amenable number.

31302620312 is a deficient number, since it is larger than the sum of its proper divisors (27393461488).

31302620312 is a wasteful number, since it uses less digits than its factorization.

31302620312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244586 (or 244582 counting only the distinct ones).

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

Subtracting from 31302620312 its reverse (21302620313), we obtain a palindrome (9999999999).

The spelling of 31302620312 in words is "thirty-one billion, three hundred two million, six hundred twenty thousand, three hundred twelve".