23143973 has 2 divisors, whose sum is σ = 23143974. Its totient is φ = 23143972.

The previous prime is 23143963. The next prime is 23143999. The reversal of 23143973 is 37934132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17156164 + 5987809 = 4142^2 + 2447^2 .

It is a cyclic number.

It is not a de Polignac number, because 23143973 - 2⁸ = 23143717 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 (23143903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571986 + 11571987.

It is an arithmetic number, because the mean of its divisors is an integer number (11571987).

Almost surely, 2^23143973 is an apocalyptic number.

It is an amenable number.

23143973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143973 is an equidigital number, since it uses as much as digits as its factorization.

23143973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 23143973 is about 4810.8183295568. The cubic root of 23143973 is about 284.9788555155.

The spelling of 23143973 in words is "twenty-three million, one hundred forty-three thousand, nine hundred seventy-three".