23791313 has 30 divisors (see below), whose sum is σ = 31745466. Its totient is φ = 17716608.

The previous prime is 23791301. The next prime is 23791349. The reversal of 23791313 is 31319732.

It can be written as a sum of positive squares in 5 ways, for example, as 17405584 + 6385729 = 4172^2 + 2527^2 .

It is not a de Polignac number, because 23791313 - 2⁴ = 23791297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23791013) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1399481 + ... + 1399497.

Almost surely, 2^23791313 is an apocalyptic number.

It is an amenable number.

23791313 is a deficient number, since it is larger than the sum of its proper divisors (7954153).

23791313 is an frugal number, since it uses more digits than its factorization.

23791313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 37 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 23791313 is about 4877.6339551057. The cubic root of 23791313 is about 287.6114270038.

The spelling of 23791313 in words is "twenty-three million, seven hundred ninety-one thousand, three hundred thirteen".