2100113031 has 4 divisors (see below), whose sum is σ = 2800150712. Its totient is φ = 1400075352.

The previous prime is 2100113017. The next prime is 2100113051. The reversal of 2100113031 is 1303110012.

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

It is not a de Polignac number, because 2100113031 - 2⁵ = 2100112999 is a prime.

It is a super-2 number, since 2×2100113031² = 8820949485952013922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100112998 and 2100113016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100113051) 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, 350018836 + ... + 350018841.

It is an arithmetic number, because the mean of its divisors is an integer number (700037678).

Almost surely, 2^2100113031 is an apocalyptic number.

2100113031 is a deficient number, since it is larger than the sum of its proper divisors (700037681).

2100113031 is an equidigital number, since it uses as much as digits as its factorization.

2100113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700037680.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 2100113031 is about 45826.9902022814. The cubic root of 2100113031 is about 1280.6021399949.

Adding to 2100113031 its reverse (1303110012), we get a palindrome (3403223043).

The spelling of 2100113031 in words is "two billion, one hundred million, one hundred thirteen thousand, thirty-one".