23056387 has 4 divisors (see below), whose sum is σ = 23348320. Its totient is φ = 22764456.

The previous prime is 23056379. The next prime is 23056417. The reversal of 23056387 is 78365032.

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 23056387 - 2³ = 23056379 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23056337) 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, 145848 + ... + 146005.

It is an arithmetic number, because the mean of its divisors is an integer number (5837080).

Almost surely, 2^23056387 is an apocalyptic number.

23056387 is a deficient number, since it is larger than the sum of its proper divisors (291933).

23056387 is an equidigital number, since it uses as much as digits as its factorization.

23056387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291932.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23056387 is about 4801.7066757560. The cubic root of 23056387 is about 284.6189099580.

The spelling of 23056387 in words is "twenty-three million, fifty-six thousand, three hundred eighty-seven".