23156913 has 8 divisors (see below), whose sum is σ = 33251008. Its totient is φ = 14250384.

The previous prime is 23156911. The next prime is 23156933. The reversal of 23156913 is 31965132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23156913 - 2¹ = 23156911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23156911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296845 + ... + 296922.

It is an arithmetic number, because the mean of its divisors is an integer number (4156376).

Almost surely, 2^23156913 is an apocalyptic number.

It is an amenable number.

23156913 is a deficient number, since it is larger than the sum of its proper divisors (10094095).

23156913 is a wasteful number, since it uses less digits than its factorization.

23156913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593783.

The product of its digits is 4860, while the sum is 30.

The square root of 23156913 is about 4812.1630271636. The cubic root of 23156913 is about 285.0319570198.

The spelling of 23156913 in words is "twenty-three million, one hundred fifty-six thousand, nine hundred thirteen".