2031323013 has 24 divisors (see below), whose sum is σ = 3109062528. Its totient is φ = 1273598592.

The previous prime is 2031322987. The next prime is 2031323017. The reversal of 2031323013 is 3103231302.

It is not a de Polignac number, because 2031323013 - 2⁵ = 2031322981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031323017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238006 + ... + 246392.

It is an arithmetic number, because the mean of its divisors is an integer number (129544272).

Almost surely, 2^2031323013 is an apocalyptic number.

It is an amenable number.

2031323013 is a deficient number, since it is larger than the sum of its proper divisors (1077739515).

2031323013 is a wasteful number, since it uses less digits than its factorization.

2031323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9993 (or 9990 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2031323013 is about 45070.2009425296. The cubic root of 2031323013 is about 1266.4644287078.

Adding to 2031323013 its reverse (3103231302), we get a palindrome (5134554315).

The spelling of 2031323013 in words is "two billion, thirty-one million, three hundred twenty-three thousand, thirteen".