31293939313 has 16 divisors (see below), whose sum is σ = 38527171200. Its totient is φ = 24752612736.

The previous prime is 31293939301. The next prime is 31293939319. The reversal of 31293939313 is 31393939213.

It is a cyclic number.

It is not a de Polignac number, because 31293939313 - 2⁹ = 31293938801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31293939319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264006 + ... + 363712.

It is an arithmetic number, because the mean of its divisors is an integer number (2407948200).

Almost surely, 2^31293939313 is an apocalyptic number.

It is an amenable number.

31293939313 is a deficient number, since it is larger than the sum of its proper divisors (7233231887).

31293939313 is a wasteful number, since it uses less digits than its factorization.

31293939313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103176.

The product of its digits is 354294, while the sum is 46.

The spelling of 31293939313 in words is "thirty-one billion, two hundred ninety-three million, nine hundred thirty-nine thousand, three hundred thirteen".