23723381 has 24 divisors (see below), whose sum is σ = 29111040. Its totient is φ = 19198080.

The previous prime is 23723377. The next prime is 23723393. The reversal of 23723381 is 18332732.

It is not a de Polignac number, because 23723381 - 2² = 23723377 is a prime.

It is a super-2 number, since 2×23723381² = 1125597612142322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23723311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38780 + ... + 39386.

It is an arithmetic number, because the mean of its divisors is an integer number (1212960).

Almost surely, 2^23723381 is an apocalyptic number.

It is an amenable number.

23723381 is a deficient number, since it is larger than the sum of its proper divisors (5387659).

23723381 is a wasteful number, since it uses less digits than its factorization.

23723381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 654 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 23723381 is about 4870.6653549592. The cubic root of 23723381 is about 287.3374244041.

The spelling of 23723381 in words is "twenty-three million, seven hundred twenty-three thousand, three hundred eighty-one".