23193913 has 12 divisors (see below), whose sum is σ = 24736320. Its totient is φ = 21706256.

The previous prime is 23193901. The next prime is 23193953. The reversal of 23193913 is 31939132.

It is not a de Polignac number, because 23193913 - 2¹⁷ = 23062841 is a prime.

It is a super-3 number, since 3×23193913³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23193953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64428 + ... + 64786.

It is an arithmetic number, because the mean of its divisors is an integer number (2061360).

Almost surely, 2^23193913 is an apocalyptic number.

23193913 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23193913 is a deficient number, since it is larger than the sum of its proper divisors (1542407).

23193913 is an equidigital number, since it uses as much as digits as its factorization.

23193913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 435 counting only the distinct ones).

The product of its digits is 4374, while the sum is 31.

The square root of 23193913 is about 4816.0059177705. The cubic root of 23193913 is about 285.1836837851.

The spelling of 23193913 in words is "twenty-three million, one hundred ninety-three thousand, nine hundred thirteen".