31313233113 has 16 divisors (see below), whose sum is σ = 45285137856. Its totient is φ = 19168309760.

The previous prime is 31313233093. The next prime is 31313233129. The reversal of 31313233113 is 31133231313.

It is a cyclic number.

It is not a de Polignac number, because 31313233113 - 2¹⁴ = 31313216729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313233153) 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, 7485531 + ... + 7489712.

It is an arithmetic number, because the mean of its divisors is an integer number (2830321116).

Almost surely, 2^31313233113 is an apocalyptic number.

It is an amenable number.

31313233113 is a deficient number, since it is larger than the sum of its proper divisors (13971904743).

31313233113 is a wasteful number, since it uses less digits than its factorization.

31313233113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14975304.

The product of its digits is 1458, while the sum is 24.

Adding to 31313233113 its reverse (31133231313), we get a palindrome (62446464426).

The spelling of 31313233113 in words is "thirty-one billion, three hundred thirteen million, two hundred thirty-three thousand, one hundred thirteen".