23193081 has 8 divisors (see below), whose sum is σ = 34360160. Its totient is φ = 15462036.

The previous prime is 23193061. The next prime is 23193089. The reversal of 23193081 is 18039132.

It is a de Polignac number, because none of the positive numbers 2^k-23193081 is a prime.

It is a super-2 number, since 2×23193081² = 1075838012545122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 859003 = 23193081 / (2 + 3 + 1 + 9 + 3 + 0 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23193089) 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, 429475 + ... + 429528.

It is an arithmetic number, because the mean of its divisors is an integer number (4295020).

Almost surely, 2^23193081 is an apocalyptic number.

It is an amenable number.

23193081 is a deficient number, since it is larger than the sum of its proper divisors (11167079).

23193081 is an equidigital number, since it uses as much as digits as its factorization.

23193081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859012 (or 859006 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 23193081 is about 4815.9195383644. The cubic root of 23193081 is about 285.1802737573.

The spelling of 23193081 in words is "twenty-three million, one hundred ninety-three thousand, eighty-one".