23111030281 has 2 divisors, whose sum is σ = 23111030282. Its totient is φ = 23111030280.

The previous prime is 23111030251. The next prime is 23111030357. The reversal of 23111030281 is 18203011132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18643444681 + 4467585600 = 136541^2 + 66840^2 .

It is a cyclic number.

It is not a de Polignac number, because 23111030281 - 2⁷ = 23111030153 is a prime.

It is a super-2 number, since 2×23111030281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23111030251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555515140 + 11555515141.

It is an arithmetic number, because the mean of its divisors is an integer number (11555515141).

Almost surely, 2^23111030281 is an apocalyptic number.

It is an amenable number.

23111030281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111030281 is an equidigital number, since it uses as much as digits as its factorization.

23111030281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 23111030281 in words is "twenty-three billion, one hundred eleven million, thirty thousand, two hundred eighty-one".