23391873 has 12 divisors (see below), whose sum is σ = 34265088. Its totient is φ = 15374520.

The previous prime is 23391859. The next prime is 23391889. The reversal of 23391873 is 37819332.

It is a happy number.

It is not a de Polignac number, because 23391873 - 2¹³ = 23383681 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23391803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17665 + ... + 18942.

It is an arithmetic number, because the mean of its divisors is an integer number (2855424).

Almost surely, 2^23391873 is an apocalyptic number.

It is an amenable number.

23391873 is a deficient number, since it is larger than the sum of its proper divisors (10873215).

23391873 is a wasteful number, since it uses less digits than its factorization.

23391873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36684 (or 36681 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 23391873 is about 4836.5145507896. The cubic root of 23391873 is about 285.9927337714.

The spelling of 23391873 in words is "twenty-three million, three hundred ninety-one thousand, eight hundred seventy-three".