2031320233013 has 4 divisors (see below), whose sum is σ = 2031342844140. Its totient is φ = 2031297621888.

The previous prime is 2031320232961. The next prime is 2031320233031. The reversal of 2031320233013 is 3103320231302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1648057710289 + 383262522724 = 1283767^2 + 619082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031320233013 - 2²⁸ = 2031051797557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031320233013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031320233073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11170268 + ... + 11350661.

It is an arithmetic number, because the mean of its divisors is an integer number (507835711035).

Almost surely, 2^{2031320233013} is an apocalyptic number.

It is an amenable number.

2031320233013 is a deficient number, since it is larger than the sum of its proper divisors (22611127).

2031320233013 is an equidigital number, since it uses as much as digits as its factorization.

2031320233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22611126.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 2031320233013 its reverse (3103320231302), we get a palindrome (5134640464315).

The spelling of 2031320233013 in words is "two trillion, thirty-one billion, three hundred twenty million, two hundred thirty-three thousand, thirteen".