123103131329 has 2 divisors, whose sum is σ = 123103131330. Its totient is φ = 123103131328.

The previous prime is 123103131301. The next prime is 123103131337. The reversal of 123103131329 is 923131301321.

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., 116936641600 + 6166489729 = 341960^2 + 78527^2 .

It is an emirp because it is prime and its reverse (923131301321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123103131329 - 2³⁶ = 54383654593 is a prime.

It is not a weakly prime, because it can be changed into another prime (123103131029) 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, 61551565664 + 61551565665.

It is an arithmetic number, because the mean of its divisors is an integer number (61551565665).

Almost surely, 2^123103131329 is an apocalyptic number.

It is an amenable number.

123103131329 is a deficient number, since it is larger than the sum of its proper divisors (1).

123103131329 is an equidigital number, since it uses as much as digits as its factorization.

123103131329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 123103131329 in words is "one hundred twenty-three billion, one hundred three million, one hundred thirty-one thousand, three hundred twenty-nine".