323272921 has 2 divisors, whose sum is σ = 323272922. Its totient is φ = 323272920.

The previous prime is 323272861. The next prime is 323272949. The reversal of 323272921 is 129272323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312016896 + 11256025 = 17664^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 323272921 - 2¹³ = 323264729 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (323272021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161636460 + 161636461.

It is an arithmetic number, because the mean of its divisors is an integer number (161636461).

Almost surely, 2^323272921 is an apocalyptic number.

It is an amenable number.

323272921 is a deficient number, since it is larger than the sum of its proper divisors (1).

323272921 is an equidigital number, since it uses as much as digits as its factorization.

323272921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 323272921 is about 17979.7920177070. The cubic root of 323272921 is about 686.3143967404.

The spelling of 323272921 in words is "three hundred twenty-three million, two hundred seventy-two thousand, nine hundred twenty-one".