23315947 has 2 divisors, whose sum is σ = 23315948. Its totient is φ = 23315946.

The previous prime is 23315923. The next prime is 23315989. The reversal of 23315947 is 74951332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23315947 - 2⁷ = 23315819 is a prime.

It is not a weakly prime, because it can be changed into another prime (23315917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11657973 + 11657974.

It is an arithmetic number, because the mean of its divisors is an integer number (11657974).

Almost surely, 2^23315947 is an apocalyptic number.

23315947 is a deficient number, since it is larger than the sum of its proper divisors (1).

23315947 is an equidigital number, since it uses as much as digits as its factorization.

23315947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 23315947 is about 4828.6589235522. The cubic root of 23315947 is about 285.6829706274.

The spelling of 23315947 in words is "twenty-three million, three hundred fifteen thousand, nine hundred forty-seven".