23081138 has 16 divisors (see below), whose sum is σ = 37104480. Its totient is φ = 10729536.

The previous prime is 23081137. The next prime is 23081173. The reversal of 23081138 is 83118032.

It is not an unprimeable number, because it can be changed into a prime (23081131) 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, 1268 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (2319030).

Almost surely, 2^23081138 is an apocalyptic number.

23081138 is a deficient number, since it is larger than the sum of its proper divisors (14023342).

23081138 is a wasteful number, since it uses less digits than its factorization.

23081138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 23081138 is about 4804.2832972255. The cubic root of 23081138 is about 284.7207195398.

The spelling of 23081138 in words is "twenty-three million, eighty-one thousand, one hundred thirty-eight".