23081173 has 2 divisors, whose sum is σ = 23081174. Its totient is φ = 23081172.

The previous prime is 23081137. The next prime is 23081203. The reversal of 23081173 is 37118032.

Together with previous prime (23081137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 8625969 = 3802^2 + 2937^2 .

It is a cyclic number.

It is not a de Polignac number, because 23081173 - 2¹³ = 23072981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23081273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11540586 + 11540587.

It is an arithmetic number, because the mean of its divisors is an integer number (11540587).

Almost surely, 2^23081173 is an apocalyptic number.

It is an amenable number.

23081173 is a deficient number, since it is larger than the sum of its proper divisors (1).

23081173 is an equidigital number, since it uses as much as digits as its factorization.

23081173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 23081173 is about 4804.2869398070. The cubic root of 23081173 is about 284.7208634556.

It can be divided in two parts, 2308 and 1173, that added together give a square (3481 = 59²).

The spelling of 23081173 in words is "twenty-three million, eighty-one thousand, one hundred seventy-three".