123334523681 has 2 divisors, whose sum is σ = 123334523682. Its totient is φ = 123334523680.

The previous prime is 123334523591. The next prime is 123334523717. The reversal of 123334523681 is 186325433321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72231400081 + 51103123600 = 268759^2 + 226060^2 .

It is an emirp because it is prime and its reverse (186325433321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123334523681 - 2²² = 123330329377 is a prime.

It is a super-2 number, since 2×123334523681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123334523381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61667261840 + 61667261841.

It is an arithmetic number, because the mean of its divisors is an integer number (61667261841).

Almost surely, 2^123334523681 is an apocalyptic number.

It is an amenable number.

123334523681 is a deficient number, since it is larger than the sum of its proper divisors (1).

123334523681 is an equidigital number, since it uses as much as digits as its factorization.

123334523681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The spelling of 123334523681 in words is "one hundred twenty-three billion, three hundred thirty-four million, five hundred twenty-three thousand, six hundred eighty-one".