23430551 has 2 divisors, whose sum is σ = 23430552. Its totient is φ = 23430550.

The previous prime is 23430541. The next prime is 23430559. The reversal of 23430551 is 15503432.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23430551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23430559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715275 + 11715276.

It is an arithmetic number, because the mean of its divisors is an integer number (11715276).

Almost surely, 2^23430551 is an apocalyptic number.

23430551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23430551 is an equidigital number, since it uses as much as digits as its factorization.

23430551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23430551 is about 4840.5114399204. The cubic root of 23430551 is about 286.1502747519.

Adding to 23430551 its reverse (15503432), we get a palindrome (38933983).

The spelling of 23430551 in words is "twenty-three million, four hundred thirty thousand, five hundred fifty-one".