2113405131 has 16 divisors (see below), whose sum is σ = 3068467200. Its totient is φ = 1288754208.

The previous prime is 2113405127. The next prime is 2113405181. The reversal of 2113405131 is 1315043112.

It is not a de Polignac number, because 2113405131 - 2² = 2113405127 is a prime.

It is a super-2 number, since 2×2113405131² = 8932962495474254322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113405098 and 2113405107.

It is not an unprimeable number, because it can be changed into a prime (2113405111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637611 + ... + 640916.

It is an arithmetic number, because the mean of its divisors is an integer number (191779200).

Almost surely, 2^2113405131 is an apocalyptic number.

2113405131 is a deficient number, since it is larger than the sum of its proper divisors (955062069).

2113405131 is a wasteful number, since it uses less digits than its factorization.

2113405131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278578.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2113405131 is about 45971.7862498294. The cubic root of 2113405131 is about 1283.2982021229.

Adding to 2113405131 its reverse (1315043112), we get a palindrome (3428448243).

The spelling of 2113405131 in words is "two billion, one hundred thirteen million, four hundred five thousand, one hundred thirty-one".