23251663 has 2 divisors, whose sum is σ = 23251664. Its totient is φ = 23251662.

The previous prime is 23251607. The next prime is 23251673. The reversal of 23251663 is 36615232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23251663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23251673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11625831 + 11625832.

It is an arithmetic number, because the mean of its divisors is an integer number (11625832).

Almost surely, 2^23251663 is an apocalyptic number.

23251663 is a deficient number, since it is larger than the sum of its proper divisors (1).

23251663 is an equidigital number, since it uses as much as digits as its factorization.

23251663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 23251663 is about 4821.9978224798. The cubic root of 23251663 is about 285.4201784165.

Adding to 23251663 its reverse (36615232), we get a palindrome (59866895).

The spelling of 23251663 in words is "twenty-three million, two hundred fifty-one thousand, six hundred sixty-three".