23663351 has 2 divisors, whose sum is σ = 23663352. Its totient is φ = 23663350.

The previous prime is 23663329. The next prime is 23663359. The reversal of 23663351 is 15336632.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23663351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23663359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11831675 + 11831676.

It is an arithmetic number, because the mean of its divisors is an integer number (11831676).

Almost surely, 2^23663351 is an apocalyptic number.

23663351 is a deficient number, since it is larger than the sum of its proper divisors (1).

23663351 is an equidigital number, since it uses as much as digits as its factorization.

23663351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 29.

The square root of 23663351 is about 4864.4990492342. The cubic root of 23663351 is about 287.0948587119.

Adding to 23663351 its reverse (15336632), we get a palindrome (38999983).

The spelling of 23663351 in words is "twenty-three million, six hundred sixty-three thousand, three hundred fifty-one".