23183947 has 2 divisors, whose sum is σ = 23183948. Its totient is φ = 23183946.

The previous prime is 23183929. The next prime is 23183999. The reversal of 23183947 is 74938132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23183947 is a prime.

It is not a weakly prime, because it can be changed into another prime (23183917) by changing a digit.

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, 11591973 + 11591974.

It is an arithmetic number, because the mean of its divisors is an integer number (11591974).

Almost surely, 2^23183947 is an apocalyptic number.

23183947 is a deficient number, since it is larger than the sum of its proper divisors (1).

23183947 is an equidigital number, since it uses as much as digits as its factorization.

23183947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 23183947 is about 4814.9711317930. The cubic root of 23183947 is about 285.1428318633.

The spelling of 23183947 in words is "twenty-three million, one hundred eighty-three thousand, nine hundred forty-seven".