23315051 has 4 divisors (see below), whose sum is σ = 23643504. Its totient is φ = 22986600.

The previous prime is 23315027. The next prime is 23315081. The reversal of 23315051 is 15051332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23315051 - 2¹⁸ = 23052907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23315011) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164120 + ... + 164261.

It is an arithmetic number, because the mean of its divisors is an integer number (5910876).

Almost surely, 2^23315051 is an apocalyptic number.

23315051 is a deficient number, since it is larger than the sum of its proper divisors (328453).

23315051 is an equidigital number, since it uses as much as digits as its factorization.

23315051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328452.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 23315051 is about 4828.5661432769. The cubic root of 23315051 is about 285.6793111118.

Adding to 23315051 its reverse (15051332), we get a palindrome (38366383).

The spelling of 23315051 in words is "twenty-three million, three hundred fifteen thousand, fifty-one".