2100031013 has 4 divisors (see below), whose sum is σ = 2100460128. Its totient is φ = 2099601900.

The previous prime is 2100030997. The next prime is 2100031051. The reversal of 2100031013 is 3101300012.

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 2100031013 - 2⁴ = 2100030997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100030985 and 2100031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100031093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207131 + ... + 217032.

It is an arithmetic number, because the mean of its divisors is an integer number (525115032).

Almost surely, 2^2100031013 is an apocalyptic number.

It is an amenable number.

2100031013 is a deficient number, since it is larger than the sum of its proper divisors (429115).

2100031013 is an equidigital number, since it uses as much as digits as its factorization.

2100031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429114.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2100031013 is about 45826.0953278806. The cubic root of 2100031013 is about 1280.5854688615.

Adding to 2100031013 its reverse (3101300012), we get a palindrome (5201331025).

The spelling of 2100031013 in words is "two billion, one hundred million, thirty-one thousand, thirteen".