23213159 has 4 divisors (see below), whose sum is σ = 23707104. Its totient is φ = 22719216.

The previous prime is 23213153. The next prime is 23213161. The reversal of 23213159 is 95131232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23213159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213153) 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, 246902 + ... + 246995.

It is an arithmetic number, because the mean of its divisors is an integer number (5926776).

Almost surely, 2^23213159 is an apocalyptic number.

23213159 is a deficient number, since it is larger than the sum of its proper divisors (493945).

23213159 is an equidigital number, since it uses as much as digits as its factorization.

23213159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493944.

The product of its digits is 1620, while the sum is 26.

The square root of 23213159 is about 4818.0036322112. The cubic root of 23213159 is about 285.2625425176.

The spelling of 23213159 in words is "twenty-three million, two hundred thirteen thousand, one hundred fifty-nine".