23651131 has 16 divisors (see below), whose sum is σ = 28776384. Its totient is φ = 18975744.

The previous prime is 23651113. The next prime is 23651141. The reversal of 23651131 is 13115632.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23651131 - 2¹⁷ = 23520059 is a prime.

It is a super-2 number, since 2×23651131² = 1118751995158322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23651101) 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, 27301 + ... + 28153.

It is an arithmetic number, because the mean of its divisors is an integer number (1798524).

Almost surely, 2^23651131 is an apocalyptic number.

23651131 is a deficient number, since it is larger than the sum of its proper divisors (5125253).

23651131 is a wasteful number, since it uses less digits than its factorization.

23651131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its digits is 540, while the sum is 22.

The square root of 23651131 is about 4863.2428481416. The cubic root of 23651131 is about 287.0454306145.

Adding to 23651131 its reverse (13115632), we get a palindrome (36766763).

The spelling of 23651131 in words is "twenty-three million, six hundred fifty-one thousand, one hundred thirty-one".