23340681 has 24 divisors (see below), whose sum is σ = 41496000. Its totient is φ = 12311136.

The previous prime is 23340649. The next prime is 23340689. The reversal of 23340681 is 18604332.

It is a happy number.

It is not a de Polignac number, because 23340681 - 2⁵ = 23340649 is a prime.

It is a super-2 number, since 2×23340681² = 1089574779087522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23340689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13431 + ... + 15068.

It is an arithmetic number, because the mean of its divisors is an integer number (1729000).

Almost surely, 2^23340681 is an apocalyptic number.

23340681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23340681 is a deficient number, since it is larger than the sum of its proper divisors (18155319).

23340681 is a wasteful number, since it uses less digits than its factorization.

23340681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28525 (or 28522 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 23340681 is about 4831.2194112874. The cubic root of 23340681 is about 285.7839542368.

The spelling of 23340681 in words is "twenty-three million, three hundred forty thousand, six hundred eighty-one".