123203311199989 has 2 divisors, whose sum is σ = 123203311199990. Its totient is φ = 123203311199988.

The previous prime is 123203311199987. The next prime is 123203311200029. The reversal of 123203311199989 is 989991113302321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113019394199364 + 10183917000625 = 10631058^2 + 3191225^2 .

It is a cyclic number.

It is not a de Polignac number, because 123203311199989 - 2¹ = 123203311199987 is a prime.

Together with 123203311199987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123203311199987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601655599994 + 61601655599995.

It is an arithmetic number, because the mean of its divisors is an integer number (61601655599995).

Almost surely, 2^{123203311199989} is an apocalyptic number.

It is an amenable number.

123203311199989 is a deficient number, since it is larger than the sum of its proper divisors (1).

123203311199989 is an equidigital number, since it uses as much as digits as its factorization.

123203311199989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5668704, while the sum is 61.

The spelling of 123203311199989 in words is "one hundred twenty-three trillion, two hundred three billion, three hundred eleven million, one hundred ninety-nine thousand, nine hundred eighty-nine".