23328881 has 2 divisors, whose sum is σ = 23328882. Its totient is φ = 23328880.

The previous prime is 23328871. The next prime is 23328971. The reversal of 23328881 is 18882332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 442225 = 4784^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 23328881 - 2¹⁸ = 23066737 is a prime.

It is a super-2 number, since 2×23328881² = 1088473377424322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23328821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11664440 + 11664441.

It is an arithmetic number, because the mean of its divisors is an integer number (11664441).

Almost surely, 2^23328881 is an apocalyptic number.

It is an amenable number.

23328881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23328881 is an equidigital number, since it uses as much as digits as its factorization.

23328881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The square root of 23328881 is about 4829.9980331259. The cubic root of 23328881 is about 285.7357862749.

The spelling of 23328881 in words is "twenty-three million, three hundred twenty-eight thousand, eight hundred eighty-one".