23123885 has 4 divisors (see below), whose sum is σ = 27748668. Its totient is φ = 18499104.

The previous prime is 23123879. The next prime is 23123897. The reversal of 23123885 is 58832132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 16883881 = 2498^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 23123885 - 2¹⁰ = 23122861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312384 + ... + 2312393.

It is an arithmetic number, because the mean of its divisors is an integer number (6937167).

Almost surely, 2^23123885 is an apocalyptic number.

It is an amenable number.

23123885 is a deficient number, since it is larger than the sum of its proper divisors (4624783).

23123885 is an equidigital number, since it uses as much as digits as its factorization.

23123885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624782.

The product of its digits is 11520, while the sum is 32.

The square root of 23123885 is about 4808.7300818407. The cubic root of 23123885 is about 284.8963817429.

The spelling of 23123885 in words is "twenty-three million, one hundred twenty-three thousand, eight hundred eighty-five".