23181369 has 16 divisors (see below), whose sum is σ = 31584384. Its totient is φ = 15120000.

The previous prime is 23181341. The next prime is 23181377. The reversal of 23181369 is 96318132.

It is not a de Polignac number, because 23181369 - 2⁷ = 23181241 is a prime.

It is a super-2 number, since 2×23181369² = 1074751737428322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23181329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32719 + ... + 33419.

It is an arithmetic number, because the mean of its divisors is an integer number (1974024).

Almost surely, 2^23181369 is an apocalyptic number.

It is an amenable number.

23181369 is a deficient number, since it is larger than the sum of its proper divisors (8403015).

23181369 is a wasteful number, since it uses less digits than its factorization.

23181369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its digits is 7776, while the sum is 33.

The square root of 23181369 is about 4814.7034176572. The cubic root of 23181369 is about 285.1322624023.

The spelling of 23181369 in words is "twenty-three million, one hundred eighty-one thousand, three hundred sixty-nine".