23970321 has 12 divisors (see below), whose sum is σ = 34756020. Its totient is φ = 15919200.

The previous prime is 23970319. The next prime is 23970379. The reversal of 23970321 is 12307932.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 11289600 = 3561^2 + 3360^2 .

It is not a de Polignac number, because 23970321 - 2¹ = 23970319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23970421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2530 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (2896335).

Almost surely, 2^23970321 is an apocalyptic number.

It is an amenable number.

23970321 is a deficient number, since it is larger than the sum of its proper divisors (10785699).

23970321 is a wasteful number, since it uses less digits than its factorization.

23970321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176 (or 10173 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 23970321 is about 4895.9494482684. The cubic root of 23970321 is about 288.3309635573.

The spelling of 23970321 in words is "twenty-three million, nine hundred seventy thousand, three hundred twenty-one".