323122139 has 2 divisors, whose sum is σ = 323122140. Its totient is φ = 323122138.

The previous prime is 323122127. The next prime is 323122157. The reversal of 323122139 is 931221323.

It is a weak prime.

It is an emirp because it is prime and its reverse (931221323) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323122139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (323122109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161561069 + 161561070.

It is an arithmetic number, because the mean of its divisors is an integer number (161561070).

Almost surely, 2^323122139 is an apocalyptic number.

323122139 is a deficient number, since it is larger than the sum of its proper divisors (1).

323122139 is an equidigital number, since it uses as much as digits as its factorization.

323122139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 323122139 is about 17975.5984323193. The cubic root of 323122139 is about 686.2076758203.

The spelling of 323122139 in words is "three hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty-nine".