123203311199489 has 2 divisors, whose sum is σ = 123203311199490. Its totient is φ = 123203311199488.

The previous prime is 123203311199483. The next prime is 123203311199491. The reversal of 123203311199489 is 984991113302321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118737308122225 + 4466003077264 = 10896665^2 + 2113292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123203311199489 is a prime.

It is a super-2 number, since 2×123203311199489² (a number of 29 digits) contains 22 as substring.

Together with 123203311199491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123203311199483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601655599744 + 61601655599745.

It is an arithmetic number, because the mean of its divisors is an integer number (61601655599745).

Almost surely, 2^{123203311199489} is an apocalyptic number.

It is an amenable number.

123203311199489 is a deficient number, since it is larger than the sum of its proper divisors (1).

123203311199489 is an equidigital number, since it uses as much as digits as its factorization.

123203311199489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 123203311199489 in words is "one hundred twenty-three trillion, two hundred three billion, three hundred eleven million, one hundred ninety-nine thousand, four hundred eighty-nine".