31320233013 has 16 divisors (see below), whose sum is σ = 42488962560. Its totient is φ = 20516177136.

The previous prime is 31320233011. The next prime is 31320233057. The reversal of 31320233013 is 31033202313.

It is not a de Polignac number, because 31320233013 - 2¹ = 31320233011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320233011) 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, 327006 + ... + 411792.

It is an arithmetic number, because the mean of its divisors is an integer number (2655560160).

Almost surely, 2^31320233013 is an apocalyptic number.

It is an amenable number.

31320233013 is a deficient number, since it is larger than the sum of its proper divisors (11168729547).

31320233013 is a wasteful number, since it uses less digits than its factorization.

31320233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86936.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31320233013 its reverse (31033202313), we get a palindrome (62353435326).

The spelling of 31320233013 in words is "thirty-one billion, three hundred twenty million, two hundred thirty-three thousand, thirteen".