23217983 has 2 divisors, whose sum is σ = 23217984. Its totient is φ = 23217982.

The previous prime is 23217973. The next prime is 23217991. The reversal of 23217983 is 38971232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23217983 - 2⁴ = 23217967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23217913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11608991 + 11608992.

It is an arithmetic number, because the mean of its divisors is an integer number (11608992).

Almost surely, 2^23217983 is an apocalyptic number.

23217983 is a deficient number, since it is larger than the sum of its proper divisors (1).

23217983 is an equidigital number, since it uses as much as digits as its factorization.

23217983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 23217983 is about 4818.5042284925. The cubic root of 23217983 is about 285.2823015860.

The spelling of 23217983 in words is "twenty-three million, two hundred seventeen thousand, nine hundred eighty-three".