23731393 has 16 divisors (see below), whose sum is σ = 28344960. Its totient is φ = 19443456.

The previous prime is 23731391. The next prime is 23731397. The reversal of 23731393 is 39313732.

It is a cyclic number.

It is not a de Polignac number, because 23731393 - 2¹ = 23731391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23731391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14505 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (1771560).

Almost surely, 2^23731393 is an apocalyptic number.

It is an amenable number.

23731393 is a deficient number, since it is larger than the sum of its proper divisors (4613567).

23731393 is a wasteful number, since it uses less digits than its factorization.

23731393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

The product of its digits is 10206, while the sum is 31.

The square root of 23731393 is about 4871.4877604280. The cubic root of 23731393 is about 287.3697678593.

The spelling of 23731393 in words is "twenty-three million, seven hundred thirty-one thousand, three hundred ninety-three".