31023030321013 has 16 divisors (see below), whose sum is σ = 32702199304000. Its totient is φ = 29348519726592.

The previous prime is 31023030320999. The next prime is 31023030321119. The reversal of 31023030321013 is 31012303032013.

It is a cyclic number.

It is not a de Polignac number, because 31023030321013 - 2¹³ = 31023030312821 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 (31023030321313) 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, 54327343 + ... + 54895411.

It is an arithmetic number, because the mean of its divisors is an integer number (2043887456500).

Almost surely, 2^{31023030321013} is an apocalyptic number.

It is an amenable number.

31023030321013 is a deficient number, since it is larger than the sum of its proper divisors (1679168982987).

31023030321013 is a wasteful number, since it uses less digits than its factorization.

31023030321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572164.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31023030321013 its reverse (31012303032013), we get a palindrome (62035333353026).

The spelling of 31023030321013 in words is "thirty-one trillion, twenty-three billion, thirty million, three hundred twenty-one thousand, thirteen".