323137109 has 2 divisors, whose sum is σ = 323137110. Its totient is φ = 323137108.

The previous prime is 323137081. The next prime is 323137127. The reversal of 323137109 is 901731323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235714609 + 87422500 = 15353^2 + 9350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323137109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323137709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161568554 + 161568555.

It is an arithmetic number, because the mean of its divisors is an integer number (161568555).

Almost surely, 2^323137109 is an apocalyptic number.

It is an amenable number.

323137109 is a deficient number, since it is larger than the sum of its proper divisors (1).

323137109 is an equidigital number, since it uses as much as digits as its factorization.

323137109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 323137109 is about 17976.0148253165. The cubic root of 323137109 is about 686.2182728145.

The spelling of 323137109 in words is "three hundred twenty-three million, one hundred thirty-seven thousand, one hundred nine".