23217773 has 2 divisors, whose sum is σ = 23217774. Its totient is φ = 23217772.

The previous prime is 23217757. The next prime is 23217793. The reversal of 23217773 is 37771232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22448644 + 769129 = 4738^2 + 877^2 .

It is a cyclic number.

It is not a de Polignac number, because 23217773 - 2⁴ = 23217757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23217713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11608886 + 11608887.

It is an arithmetic number, because the mean of its divisors is an integer number (11608887).

Almost surely, 2^23217773 is an apocalyptic number.

It is an amenable number.

23217773 is a deficient number, since it is larger than the sum of its proper divisors (1).

23217773 is an equidigital number, since it uses as much as digits as its factorization.

23217773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 32.

The square root of 23217773 is about 4818.4824374485. The cubic root of 23217773 is about 285.2814414846.

The spelling of 23217773 in words is "twenty-three million, two hundred seventeen thousand, seven hundred seventy-three".