23117493 has 8 divisors (see below), whose sum is σ = 35226688. Its totient is φ = 13209984.

The previous prime is 23117477. The next prime is 23117513. The reversal of 23117493 is 39471132.

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

It is not a de Polignac number, because 23117493 - 2⁴ = 23117477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23117493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550396 + ... + 550437.

It is an arithmetic number, because the mean of its divisors is an integer number (4403336).

Almost surely, 2^23117493 is an apocalyptic number.

It is an amenable number.

23117493 is a deficient number, since it is larger than the sum of its proper divisors (12109195).

23117493 is a wasteful number, since it uses less digits than its factorization.

23117493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100843.

The product of its digits is 4536, while the sum is 30.

The square root of 23117493 is about 4808.0654113687. The cubic root of 23117493 is about 284.8701285781.

The spelling of 23117493 in words is "twenty-three million, one hundred seventeen thousand, four hundred ninety-three".