23031081 has 16 divisors (see below), whose sum is σ = 34848000. Its totient is φ = 15026544.

The previous prime is 23031061. The next prime is 23031083. The reversal of 23031081 is 18013032.

It is not a de Polignac number, because 23031081 - 2⁹ = 23030569 is a prime.

It is a super-2 number, since 2×23031081² = 1060861384057122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23031083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7806 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (2178000).

Almost surely, 2^23031081 is an apocalyptic number.

It is an amenable number.

23031081 is a deficient number, since it is larger than the sum of its proper divisors (11816919).

23031081 is a wasteful number, since it uses less digits than its factorization.

23031081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18205 (or 18199 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 23031081 is about 4799.0708475704. The cubic root of 23031081 is about 284.5147421071.

The spelling of 23031081 in words is "twenty-three million, thirty-one thousand, eighty-one".