31233131122013 has 8 divisors (see below), whose sum is σ = 31332433479168. Its totient is φ = 31133958489504.

The previous prime is 31233131121977. The next prime is 31233131122033. The reversal of 31233131122013 is 31022113133213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31233131122013 - 2⁶ = 31233131121949 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 (31233131122033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31948856 + ... + 32911937.

It is an arithmetic number, because the mean of its divisors is an integer number (3916554184896).

Almost surely, 2^{31233131122013} is an apocalyptic number.

It is an amenable number.

31233131122013 is a deficient number, since it is larger than the sum of its proper divisors (99302357155).

31233131122013 is a wasteful number, since it uses less digits than its factorization.

31233131122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64862323.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31233131122013 its reverse (31022113133213), we get a palindrome (62255244255226).

The spelling of 31233131122013 in words is "thirty-one trillion, two hundred thirty-three billion, one hundred thirty-one million, one hundred twenty-two thousand, thirteen".