23219971 has 2 divisors, whose sum is σ = 23219972. Its totient is φ = 23219970.

The previous prime is 23219941. The next prime is 23219983. The reversal of 23219971 is 17991232.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23219971 - 2⁵ = 23219939 is a prime.

It is not a weakly prime, because it can be changed into another prime (23219941) 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, 11609985 + 11609986.

It is an arithmetic number, because the mean of its divisors is an integer number (11609986).

Almost surely, 2^23219971 is an apocalyptic number.

23219971 is a deficient number, since it is larger than the sum of its proper divisors (1).

23219971 is an equidigital number, since it uses as much as digits as its factorization.

23219971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 23219971 is about 4818.7105121599. The cubic root of 23219971 is about 285.2904436230.

The spelling of 23219971 in words is "twenty-three million, two hundred nineteen thousand, nine hundred seventy-one".