123212312030189 has 2 divisors, whose sum is σ = 123212312030190. Its totient is φ = 123212312030188.

The previous prime is 123212312030107. The next prime is 123212312030221. The reversal of 123212312030189 is 981030213212321.

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., 85206837870025 + 38005474160164 = 9230755^2 + 6164858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123212312030189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123212312330189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61606156015094 + 61606156015095.

It is an arithmetic number, because the mean of its divisors is an integer number (61606156015095).

Almost surely, 2^{123212312030189} is an apocalyptic number.

It is an amenable number.

123212312030189 is a deficient number, since it is larger than the sum of its proper divisors (1).

123212312030189 is an equidigital number, since it uses as much as digits as its factorization.

123212312030189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 123212312030189 in words is "one hundred twenty-three trillion, two hundred twelve billion, three hundred twelve million, thirty thousand, one hundred eighty-nine".