23431513 has 8 divisors (see below), whose sum is σ = 26812800. Its totient is φ = 20058720.

The previous prime is 23431501. The next prime is 23431519. The reversal of 23431513 is 31513432.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23431513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23431519) 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, 5748 + ... + 8938.

It is an arithmetic number, because the mean of its divisors is an integer number (3351600).

Almost surely, 2^23431513 is an apocalyptic number.

It is an amenable number.

23431513 is a deficient number, since it is larger than the sum of its proper divisors (3381287).

23431513 is a wasteful number, since it uses less digits than its factorization.

23431513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247.

The product of its digits is 1080, while the sum is 22.

The square root of 23431513 is about 4840.6108085654. The cubic root of 23431513 is about 286.1541909039.

Adding to 23431513 its reverse (31513432), we get a palindrome (54944945).

The spelling of 23431513 in words is "twenty-three million, four hundred thirty-one thousand, five hundred thirteen".