2113000031 has 4 divisors (see below), whose sum is σ = 2117235000. Its totient is φ = 2108765064.

The previous prime is 2113000027. The next prime is 2113000049. The reversal of 2113000031 is 1300003112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113000031 - 2² = 2113000027 is a prime.

It is a super-2 number, since 2×2113000031² = 8929538262012001922, 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 = 2112999976 and 2113000021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113000081) 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, 2116736 + ... + 2117733.

It is an arithmetic number, because the mean of its divisors is an integer number (529308750).

Almost surely, 2^2113000031 is an apocalyptic number.

2113000031 is a deficient number, since it is larger than the sum of its proper divisors (4234969).

2113000031 is an equidigital number, since it uses as much as digits as its factorization.

2113000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234968.

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

The square root of 2113000031 is about 45967.3800754405. The cubic root of 2113000031 is about 1283.2162021767.

Adding to 2113000031 its reverse (1300003112), we get a palindrome (3413003143).

The spelling of 2113000031 in words is "two billion, one hundred thirteen million, thirty-one", and thus it is an aban number.