23453213281 has 2 divisors, whose sum is σ = 23453213282. Its totient is φ = 23453213280.

The previous prime is 23453213261. The next prime is 23453213291. The reversal of 23453213281 is 18231235432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15481580625 + 7971632656 = 124425^2 + 89284^2 .

It is a cyclic number.

It is not a de Polignac number, because 23453213281 - 2⁵ = 23453213249 is a prime.

It is a super-2 number, since 2×23453213281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23453213261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11726606640 + 11726606641.

It is an arithmetic number, because the mean of its divisors is an integer number (11726606641).

Almost surely, 2^23453213281 is an apocalyptic number.

It is an amenable number.

23453213281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23453213281 is an equidigital number, since it uses as much as digits as its factorization.

23453213281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The spelling of 23453213281 in words is "twenty-three billion, four hundred fifty-three million, two hundred thirteen thousand, two hundred eighty-one".