31031322313013 has 4 divisors (see below), whose sum is σ = 33852351614208. Its totient is φ = 28210293011820.

The previous prime is 31031322313001. The next prime is 31031322313037.

31031322313013 is nontrivially palindromic in base 10.

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 31031322313013 - 2¹⁶ = 31031322247477 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 (31031322313063) 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, 1410514650581 + ... + 1410514650602.

It is an arithmetic number, because the mean of its divisors is an integer number (8463087903552).

Almost surely, 2^{31031322313013} is an apocalyptic number.

It is an amenable number.

31031322313013 is a deficient number, since it is larger than the sum of its proper divisors (2821029301195).

31031322313013 is a wasteful number, since it uses less digits than its factorization.

31031322313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821029301194.

The product of its (nonzero) digits is 2916, while the sum is 26.

It can be divided in two parts, 3103132 and 2313013, that added together give a palindrome (5416145).

The spelling of 31031322313013 in words is "thirty-one trillion, thirty-one billion, three hundred twenty-two million, three hundred thirteen thousand, thirteen".