23117651 has 2 divisors, whose sum is σ = 23117652. Its totient is φ = 23117650.

The previous prime is 23117639. The next prime is 23117657. The reversal of 23117651 is 15671132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23117651 - 2¹⁰ = 23116627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23117651.

It is not a weakly prime, because it can be changed into another prime (23117657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11558825 + 11558826.

It is an arithmetic number, because the mean of its divisors is an integer number (11558826).

Almost surely, 2^23117651 is an apocalyptic number.

23117651 is a deficient number, since it is larger than the sum of its proper divisors (1).

23117651 is an equidigital number, since it uses as much as digits as its factorization.

23117651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 23117651 is about 4808.0818420655. The cubic root of 23117651 is about 284.8707775726.

Adding to 23117651 its reverse (15671132), we get a palindrome (38788783).

The spelling of 23117651 in words is "twenty-three million, one hundred seventeen thousand, six hundred fifty-one".