23230505281 has 2 divisors, whose sum is σ = 23230505282. Its totient is φ = 23230505280.

The previous prime is 23230505269. The next prime is 23230505327. The reversal of 23230505281 is 18250503232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23230332225 + 173056 = 152415^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 23230505281 - 2²⁷ = 23096287553 is a prime.

It is a super-2 number, since 2×23230505281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23230505251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615252640 + 11615252641.

It is an arithmetic number, because the mean of its divisors is an integer number (11615252641).

Almost surely, 2^23230505281 is an apocalyptic number.

It is an amenable number.

23230505281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23230505281 is an equidigital number, since it uses as much as digits as its factorization.

23230505281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 23230505281 in words is "twenty-three billion, two hundred thirty million, five hundred five thousand, two hundred eighty-one".