2031123013 has 4 divisors (see below), whose sum is σ = 2031572320. Its totient is φ = 2030673708.

The previous prime is 2031122987. The next prime is 2031123037. The reversal of 2031123013 is 3103211302.

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 2031123013 - 2²⁹ = 1494252101 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 (2031123053) 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, 217803 + ... + 226936.

It is an arithmetic number, because the mean of its divisors is an integer number (507893080).

Almost surely, 2^2031123013 is an apocalyptic number.

It is an amenable number.

2031123013 is a deficient number, since it is larger than the sum of its proper divisors (449307).

2031123013 is an equidigital number, since it uses as much as digits as its factorization.

2031123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449306.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2031123013 is about 45067.9821270045. The cubic root of 2031123013 is about 1266.4228628256.

Adding to 2031123013 its reverse (3103211302), we get a palindrome (5134334315).

The spelling of 2031123013 in words is "two billion, thirty-one million, one hundred twenty-three thousand, thirteen".