23981331 has 8 divisors (see below), whose sum is σ = 34881984. Its totient is φ = 14534120.

The previous prime is 23981329. The next prime is 23981359. The reversal of 23981331 is 13318932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23981331 - 2¹ = 23981329 is a prime.

It is a super-2 number, since 2×23981331² = 1150208473063122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23981311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363321 + ... + 363386.

It is an arithmetic number, because the mean of its divisors is an integer number (4360248).

Almost surely, 2^23981331 is an apocalyptic number.

23981331 is a deficient number, since it is larger than the sum of its proper divisors (10900653).

23981331 is a wasteful number, since it uses less digits than its factorization.

23981331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726721.

The product of its digits is 3888, while the sum is 30.

The square root of 23981331 is about 4897.0737180484. The cubic root of 23981331 is about 288.3751020010.

The spelling of 23981331 in words is "twenty-three million, nine hundred eighty-one thousand, three hundred thirty-one".