31113203313013 has 4 divisors (see below), whose sum is σ = 32465951283168. Its totient is φ = 29760455342860.

The previous prime is 31113203313001. The next prime is 31113203313037. The reversal of 31113203313013 is 31031330231113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31113203313013 - 2⁵ = 31113203312981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113203311013) 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, 676373985043 + ... + 676373985088.

It is an arithmetic number, because the mean of its divisors is an integer number (8116487820792).

Almost surely, 2^{31113203313013} is an apocalyptic number.

It is an amenable number.

31113203313013 is a deficient number, since it is larger than the sum of its proper divisors (1352747970155).

31113203313013 is a wasteful number, since it uses less digits than its factorization.

31113203313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352747970154.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31113203313013 its reverse (31031330231113), we get a palindrome (62144533544126).

The spelling of 31113203313013 in words is "thirty-one trillion, one hundred thirteen billion, two hundred three million, three hundred thirteen thousand, thirteen".