23391189 has 24 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 15226848.

The previous prime is 23391131. The next prime is 23391191. The reversal of 23391189 is 98119332.

It is not a de Polignac number, because 23391189 - 2⁷ = 23391061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23391089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118639 + ... + 118835.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^23391189 is an apocalyptic number.

It is an amenable number.

23391189 is a deficient number, since it is larger than the sum of its proper divisors (11203371).

23391189 is a wasteful number, since it uses less digits than its factorization.

23391189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 446 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 23391189 is about 4836.4438381935. The cubic root of 23391189 is about 285.9899461802.

The spelling of 23391189 in words is "twenty-three million, three hundred ninety-one thousand, one hundred eighty-nine".