23811139 has 8 divisors (see below), whose sum is σ = 26101440. Its totient is φ = 21541800.

The previous prime is 23811127. The next prime is 23811157. The reversal of 23811139 is 93111832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23811139 - 2⁵ = 23811107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23811539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2809 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (3262680).

Almost surely, 2^23811139 is an apocalyptic number.

23811139 is a deficient number, since it is larger than the sum of its proper divisors (2290301).

23811139 is a wasteful number, since it uses less digits than its factorization.

23811139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481.

The product of its digits is 1296, while the sum is 28.

The square root of 23811139 is about 4879.6658697087. The cubic root of 23811139 is about 287.6912965056.

The spelling of 23811139 in words is "twenty-three million, eight hundred eleven thousand, one hundred thirty-nine".