323956961 has 2 divisors, whose sum is σ = 323956962. Its totient is φ = 323956960.

The previous prime is 323956957. The next prime is 323956967. The reversal of 323956961 is 169659323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318979600 + 4977361 = 17860^2 + 2231^2 .

It is an emirp because it is prime and its reverse (169659323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323956961 - 2² = 323956957 is a prime.

It is a super-2 number, since 2×323956961² = 209896225160711042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (323956967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161978480 + 161978481.

It is an arithmetic number, because the mean of its divisors is an integer number (161978481).

Almost surely, 2^323956961 is an apocalyptic number.

It is an amenable number.

323956961 is a deficient number, since it is larger than the sum of its proper divisors (1).

323956961 is an equidigital number, since it uses as much as digits as its factorization.

323956961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 44.

The square root of 323956961 is about 17998.8044325172. The cubic root of 323956961 is about 686.7981322370.

The spelling of 323956961 in words is "three hundred twenty-three million, nine hundred fifty-six thousand, nine hundred sixty-one".