323123189 has 2 divisors, whose sum is σ = 323123190. Its totient is φ = 323123188.

The previous prime is 323123149. The next prime is 323123263. The reversal of 323123189 is 981321323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175695025 + 147428164 = 13255^2 + 12142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323123189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323123149) 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, 161561594 + 161561595.

It is an arithmetic number, because the mean of its divisors is an integer number (161561595).

Almost surely, 2^323123189 is an apocalyptic number.

It is an amenable number.

323123189 is a deficient number, since it is larger than the sum of its proper divisors (1).

323123189 is an equidigital number, since it uses as much as digits as its factorization.

323123189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 323123189 is about 17975.6276385555. The cubic root of 323123189 is about 686.2084191072.

The spelling of 323123189 in words is "three hundred twenty-three million, one hundred twenty-three thousand, one hundred eighty-nine".