23181713 has 4 divisors (see below), whose sum is σ = 23508288. Its totient is φ = 22855140.

The previous prime is 23181679. The next prime is 23181731. The reversal of 23181713 is 31718132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23181713 - 2¹² = 23177617 is a prime.

It is a super-2 number, since 2×23181713² = 1074783635228738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23181733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163181 + ... + 163322.

It is an arithmetic number, because the mean of its divisors is an integer number (5877072).

Almost surely, 2^23181713 is an apocalyptic number.

It is an amenable number.

23181713 is a deficient number, since it is larger than the sum of its proper divisors (326575).

23181713 is an equidigital number, since it uses as much as digits as its factorization.

23181713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326574.

The product of its digits is 1008, while the sum is 26.

The square root of 23181713 is about 4814.7391414281. The cubic root of 23181713 is about 285.1336728024.

Adding to 23181713 its reverse (31718132), we get a palindrome (54899845).

The spelling of 23181713 in words is "twenty-three million, one hundred eighty-one thousand, seven hundred thirteen".