23203973 has 16 divisors (see below), whose sum is σ = 26300400. Its totient is φ = 20321280.

The previous prime is 23203969. The next prime is 23203993. The reversal of 23203973 is 37930232.

It can be written as a sum of positive squares in 8 ways, for example, as 7059649 + 16144324 = 2657^2 + 4018^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203973 - 2² = 23203969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 (23203993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22493 + ... + 23501.

It is an arithmetic number, because the mean of its divisors is an integer number (1643775).

Almost surely, 2^23203973 is an apocalyptic number.

It is an amenable number.

23203973 is a deficient number, since it is larger than the sum of its proper divisors (3096427).

23203973 is a wasteful number, since it uses less digits than its factorization.

23203973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 23203973 is about 4817.0502384758. The cubic root of 23203973 is about 285.2249091585.

The spelling of 23203973 in words is "twenty-three million, two hundred three thousand, nine hundred seventy-three".