23001321 has 32 divisors (see below), whose sum is σ = 36633600. Its totient is φ = 12559680.

The previous prime is 23001313. The next prime is 23001337. The reversal of 23001321 is 12310032.

It is a happy number.

It is not a de Polignac number, because 23001321 - 2³ = 23001313 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23001297 and 23001306.

It is not an unprimeable number, because it can be changed into a prime (23001371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108906 + ... + 109116.

It is an arithmetic number, because the mean of its divisors is an integer number (1144800).

Almost surely, 2^23001321 is an apocalyptic number.

23001321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23001321 is a deficient number, since it is larger than the sum of its proper divisors (13632279).

23001321 is a wasteful number, since it uses less digits than its factorization.

23001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 23001321 is about 4795.9692451057. The cubic root of 23001321 is about 284.3921424436.

Adding to 23001321 its reverse (12310032), we get a palindrome (35311353).

The spelling of 23001321 in words is "twenty-three million, one thousand, three hundred twenty-one".