23381123 has 4 divisors (see below), whose sum is σ = 23516448. Its totient is φ = 23245800.

The previous prime is 23381119. The next prime is 23381147. The reversal of 23381123 is 32118332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23381123 - 2² = 23381119 is a prime.

It is a super-2 number, since 2×23381123² = 1093353825482258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23381023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67403 + ... + 67748.

It is an arithmetic number, because the mean of its divisors is an integer number (5879112).

Almost surely, 2^23381123 is an apocalyptic number.

23381123 is a deficient number, since it is larger than the sum of its proper divisors (135325).

23381123 is a wasteful number, since it uses less digits than its factorization.

23381123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135324.

The product of its digits is 864, while the sum is 23.

The square root of 23381123 is about 4835.4030855762. The cubic root of 23381123 is about 285.9489166592.

Adding to 23381123 its reverse (32118332), we get a palindrome (55499455).

The spelling of 23381123 in words is "twenty-three million, three hundred eighty-one thousand, one hundred twenty-three".