123231193117 has 2 divisors, whose sum is σ = 123231193118. Its totient is φ = 123231193116.

The previous prime is 123231193093. The next prime is 123231193147. The reversal of 123231193117 is 711391132321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118015609156 + 5215583961 = 343534^2 + 72219^2 .

It is a cyclic number.

It is not a de Polignac number, because 123231193117 - 2⁷ = 123231192989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123231193147) 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, 61615596558 + 61615596559.

It is an arithmetic number, because the mean of its divisors is an integer number (61615596559).

Almost surely, 2^123231193117 is an apocalyptic number.

It is an amenable number.

123231193117 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231193117 is an equidigital number, since it uses as much as digits as its factorization.

123231193117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The spelling of 123231193117 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred ninety-three thousand, one hundred seventeen".