31313333331313 has 16 divisors (see below), whose sum is σ = 34482531409920. Its totient is φ = 28197941093200.

The previous prime is 31313333331221. The next prime is 31313333331367.

It is a happy number.

31313333331313 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31313333331313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313333334313) 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, 11168148 + ... + 13687738.

It is an arithmetic number, because the mean of its divisors is an integer number (2155158213120).

Almost surely, 2^{31313333331313} is an apocalyptic number.

It is an amenable number.

31313333331313 is a deficient number, since it is larger than the sum of its proper divisors (3169198078607).

31313333331313 is a wasteful number, since it uses less digits than its factorization.

31313333331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530268.

The product of its digits is 59049, while the sum is 34.

It can be divided in two parts, 3131333 and 3331313, that added together give a palindrome (6462646).

The spelling of 31313333331313 in words is "thirty-one trillion, three hundred thirteen billion, three hundred thirty-three million, three hundred thirty-one thousand, three hundred thirteen".