323220137 has 2 divisors, whose sum is σ = 323220138. Its totient is φ = 323220136.

The previous prime is 323220119. The next prime is 323220223. The reversal of 323220137 is 731022323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311310736 + 11909401 = 17644^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 323220137 - 2²⁴ = 306442921 is a prime.

It is a super-3 number, since 3×323220137³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (323225137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161610068 + 161610069.

It is an arithmetic number, because the mean of its divisors is an integer number (161610069).

Almost surely, 2^323220137 is an apocalyptic number.

It is an amenable number.

323220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

323220137 is an equidigital number, since it uses as much as digits as its factorization.

323220137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 323220137 is about 17978.3240876340. The cubic root of 323220137 is about 686.2770409040.

The spelling of 323220137 in words is "three hundred twenty-three million, two hundred twenty thousand, one hundred thirty-seven".