2113653231 has 48 divisors (see below), whose sum is σ = 3416738080. Its totient is φ = 1290193920.

The previous prime is 2113653211. The next prime is 2113653247. The reversal of 2113653231 is 1323563112.

2113653231 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 653 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 2113653231 - 2¹⁹ = 2113128943 is a prime.

It is a super-2 number, since 2×2113653231² = 8935059961833478722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113653195 and 2113653204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113653211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285051 + ... + 292371.

Almost surely, 2^2113653231 is an apocalyptic number.

2113653231 is a deficient number, since it is larger than the sum of its proper divisors (1303084849).

2113653231 is a wasteful number, since it uses less digits than its factorization.

2113653231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401 (or 7378 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 2113653231 is about 45974.4845648105. The cubic root of 2113653231 is about 1283.3484171087.

The spelling of 2113653231 in words is "two billion, one hundred thirteen million, six hundred fifty-three thousand, two hundred thirty-one".