23251131 has 20 divisors (see below), whose sum is σ = 34981584. Its totient is φ = 15390000.

The previous prime is 23251097. The next prime is 23251159. The reversal of 23251131 is 13115232.

It is not a de Polignac number, because 23251131 - 2¹⁰ = 23250107 is a prime.

It is a super-2 number, since 2×23251131² = 1081230185558322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23251181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11281 + ... + 13181.

Almost surely, 2^23251131 is an apocalyptic number.

23251131 is a deficient number, since it is larger than the sum of its proper divisors (11730453).

23251131 is a wasteful number, since it uses less digits than its factorization.

23251131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 2055 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 23251131 is about 4821.9426583069. The cubic root of 23251131 is about 285.4180015874.

Adding to 23251131 its reverse (13115232), we get a palindrome (36366363).

The spelling of 23251131 in words is "twenty-three million, two hundred fifty-one thousand, one hundred thirty-one".