23731973 has 4 divisors (see below), whose sum is σ = 23808108. Its totient is φ = 23655840.

The previous prime is 23731951. The next prime is 23732011. The reversal of 23731973 is 37913732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11607649 + 12124324 = 3407^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 23731973 - 2⁶ = 23731909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23731943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37598 + ... + 38223.

It is an arithmetic number, because the mean of its divisors is an integer number (5952027).

Almost surely, 2^23731973 is an apocalyptic number.

It is an amenable number.

23731973 is a deficient number, since it is larger than the sum of its proper divisors (76135).

23731973 is an equidigital number, since it uses as much as digits as its factorization.

23731973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76134.

The product of its digits is 23814, while the sum is 35.

The square root of 23731973 is about 4871.5472901328. The cubic root of 23731973 is about 287.3721089651.

The spelling of 23731973 in words is "twenty-three million, seven hundred thirty-one thousand, nine hundred seventy-three".