123320522351231 has 2 divisors, whose sum is σ = 123320522351232. Its totient is φ = 123320522351230.

The previous prime is 123320522351179. The next prime is 123320522351233. The reversal of 123320522351231 is 132153225023321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123320522351231 - 2⁴² = 118922475840127 is a prime.

It is a super-2 number, since 2×123320522351231² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 123320522351233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123320522351191 and 123320522351200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123320522351233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660261175615 + 61660261175616.

It is an arithmetic number, because the mean of its divisors is an integer number (61660261175616).

Almost surely, 2^{123320522351231} is an apocalyptic number.

123320522351231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320522351231 is an equidigital number, since it uses as much as digits as its factorization.

123320522351231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 123320522351231 its reverse (132153225023321), we get a palindrome (255473747374552).

The spelling of 123320522351231 in words is "one hundred twenty-three trillion, three hundred twenty billion, five hundred twenty-two million, three hundred fifty-one thousand, two hundred thirty-one".