23131494 has 20 divisors (see below), whose sum is σ = 51832044. Its totient is φ = 7710444.

The previous prime is 23131483. The next prime is 23131513. The reversal of 23131494 is 49413132.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 71232 + ... + 71555.

Almost surely, 2^23131494 is an apocalyptic number.

23131494 is an abundant number, since it is smaller than the sum of its proper divisors (28700550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131494 is a wasteful number, since it uses less digits than its factorization.

23131494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142801 (or 142792 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 23131494 is about 4809.5211819889. The cubic root of 23131494 is about 284.9276270525.

The spelling of 23131494 in words is "twenty-three million, one hundred thirty-one thousand, four hundred ninety-four".