23811057 has 16 divisors (see below), whose sum is σ = 35775360. Its totient is φ = 15649200.

The previous prime is 23811023. The next prime is 23811061. The reversal of 23811057 is 75011832.

It is not a de Polignac number, because 23811057 - 2⁶ = 23810993 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23811057.

It is not an unprimeable number, because it can be changed into a prime (23811157) 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, 4294 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (2235960).

Almost surely, 2^23811057 is an apocalyptic number.

23811057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23811057 is a deficient number, since it is larger than the sum of its proper divisors (11964303).

23811057 is a wasteful number, since it uses less digits than its factorization.

23811057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12501 (or 12495 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 23811057 is about 4879.6574674868. The cubic root of 23811057 is about 287.6909662580.

Adding to 23811057 its reverse (75011832), we get a palindrome (98822889).

The spelling of 23811057 in words is "twenty-three million, eight hundred eleven thousand, fifty-seven".