23018113 has 2 divisors, whose sum is σ = 23018114. Its totient is φ = 23018112.

The previous prime is 23018081. The next prime is 23018117. The reversal of 23018113 is 31181032.

23018113 = 3392² + 3393².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 11505664 = 3393^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 23018113 - 2⁵ = 23018081 is a prime.

It is not a weakly prime, because it can be changed into another prime (23018117) 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, 11509056 + 11509057.

It is an arithmetic number, because the mean of its divisors is an integer number (11509057).

Almost surely, 2^23018113 is an apocalyptic number.

23018113 is the 3393-rd centered square number.

It is an amenable number.

23018113 is a deficient number, since it is larger than the sum of its proper divisors (1).

23018113 is an equidigital number, since it uses as much as digits as its factorization.

23018113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 23018113 is about 4797.7195624588. The cubic root of 23018113 is about 284.4613319656.

Adding to 23018113 its reverse (31181032), we get a palindrome (54199145).

The spelling of 23018113 in words is "twenty-three million, eighteen thousand, one hundred thirteen".