123031321111229 has 2 divisors, whose sum is σ = 123031321111230. Its totient is φ = 123031321111228.

The previous prime is 123031321111219. The next prime is 123031321111249. The reversal of 123031321111229 is 922111123130321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121686711568900 + 1344609542329 = 11031170^2 + 1159573^2 .

It is a cyclic number.

It is not a de Polignac number, because 123031321111229 - 2⁴ = 123031321111213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123031321111195 and 123031321111204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123031321111219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515660555614 + 61515660555615.

It is an arithmetic number, because the mean of its divisors is an integer number (61515660555615).

Almost surely, 2^{123031321111229} is an apocalyptic number.

It is an amenable number.

123031321111229 is a deficient number, since it is larger than the sum of its proper divisors (1).

123031321111229 is an equidigital number, since it uses as much as digits as its factorization.

123031321111229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 123031321111229 in words is "one hundred twenty-three trillion, thirty-one billion, three hundred twenty-one million, one hundred eleven thousand, two hundred twenty-nine".