23131389 has 8 divisors (see below), whose sum is σ = 30908160. Its totient is φ = 15387776.

The previous prime is 23131387. The next prime is 23131391. The reversal of 23131389 is 98313132.

It is an interprime number because it is at equal distance from previous prime (23131387) and next prime (23131391).

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

It is a cyclic number.

It is not a de Polignac number, because 23131389 - 2¹ = 23131387 is a prime.

It is a super-2 number, since 2×23131389² = 1070122314138642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131387) 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, 6612 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (3863520).

Almost surely, 2^23131389 is an apocalyptic number.

It is an amenable number.

23131389 is a deficient number, since it is larger than the sum of its proper divisors (7776771).

23131389 is a wasteful number, since it uses less digits than its factorization.

23131389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16579.

The product of its digits is 3888, while the sum is 30.

The square root of 23131389 is about 4809.5102661290. The cubic root of 23131389 is about 284.9271959311.

The spelling of 23131389 in words is "twenty-three million, one hundred thirty-one thousand, three hundred eighty-nine".