23020181 has 2 divisors, whose sum is σ = 23020182. Its totient is φ = 23020180.

The previous prime is 23020111. The next prime is 23020183. The reversal of 23020181 is 18102032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 372100 = 4759^2 + 610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23020181 is a prime.

It is a super-2 number, since 2×23020181² = 1059857466545522, which contains 22 as substring.

Together with 23020183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510090 + 11510091.

It is an arithmetic number, because the mean of its divisors is an integer number (11510091).

Almost surely, 2^23020181 is an apocalyptic number.

It is an amenable number.

23020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020181 is an equidigital number, since it uses as much as digits as its factorization.

23020181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 23020181 is about 4797.9350766762. The cubic root of 23020181 is about 284.4698505964.

The spelling of 23020181 in words is "twenty-three million, twenty thousand, one hundred eighty-one".