23315506 has 4 divisors (see below), whose sum is σ = 34973262. Its totient is φ = 11657752.

The previous prime is 23315497. The next prime is 23315563. The reversal of 23315506 is 60551332.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 16736281 + 6579225 = 4091^2 + 2565^2 .

It is a super-2 number, since 2×23315506² = 1087225640072072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5828875 + ... + 5828878.

Almost surely, 2^23315506 is an apocalyptic number.

23315506 is a deficient number, since it is larger than the sum of its proper divisors (11657756).

23315506 is a wasteful number, since it uses less digits than its factorization.

23315506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11657755.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 23315506 is about 4828.6132584832. The cubic root of 23315506 is about 285.6811694713.

Adding to 23315506 its reverse (60551332), we get a palindrome (83866838).

The spelling of 23315506 in words is "twenty-three million, three hundred fifteen thousand, five hundred six".