23180881 has 2 divisors, whose sum is σ = 23180882. Its totient is φ = 23180880.

The previous prime is 23180873. The next prime is 23180903. The reversal of 23180881 is 18808132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22515025 + 665856 = 4745^2 + 816^2 .

It is a cyclic number.

It is not a de Polignac number, because 23180881 - 2³ = 23180873 is a prime.

It is a super-2 number, since 2×23180881² = 1074706487872322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23180081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11590440 + 11590441.

It is an arithmetic number, because the mean of its divisors is an integer number (11590441).

Almost surely, 2^23180881 is an apocalyptic number.

It is an amenable number.

23180881 is a deficient number, since it is larger than the sum of its proper divisors (1).

23180881 is an equidigital number, since it uses as much as digits as its factorization.

23180881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 23180881 is about 4814.6527392949. The cubic root of 23180881 is about 285.1302615783.

The spelling of 23180881 in words is "twenty-three million, one hundred eighty thousand, eight hundred eighty-one".