23538131 has 16 divisors (see below), whose sum is σ = 26307840. Its totient is φ = 20956320.

The previous prime is 23538127. The next prime is 23538139. The reversal of 23538131 is 13183532.

It is a cyclic number.

It is not a de Polignac number, because 23538131 - 2² = 23538127 is a prime.

It is a super-2 number, since 2×23538131² = 1108087221946322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23538131.

It is not an unprimeable number, because it can be changed into a prime (23538139) 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, 26216 + ... + 27098.

It is an arithmetic number, because the mean of its divisors is an integer number (1644240).

Almost surely, 2^23538131 is an apocalyptic number.

23538131 is a deficient number, since it is larger than the sum of its proper divisors (2769709).

23538131 is a wasteful number, since it uses less digits than its factorization.

23538131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its digits is 2160, while the sum is 26.

The square root of 23538131 is about 4851.6111756817. The cubic root of 23538131 is about 286.5875535848.

The spelling of 23538131 in words is "twenty-three million, five hundred thirty-eight thousand, one hundred thirty-one".