323416561 has 8 divisors (see below), whose sum is σ = 348624360. Its totient is φ = 298255872.

The previous prime is 323416553. The next prime is 323416567. The reversal of 323416561 is 165614323.

It can be written as a sum of positive squares in 4 ways, for example, as 3686400 + 319730161 = 1920^2 + 17881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 323416561 - 2³ = 323416553 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323416567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3201 + ... + 25633.

It is an arithmetic number, because the mean of its divisors is an integer number (43578045).

Almost surely, 2^323416561 is an apocalyptic number.

It is an amenable number.

323416561 is a deficient number, since it is larger than the sum of its proper divisors (25207799).

323416561 is a wasteful number, since it uses less digits than its factorization.

323416561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23555.

The product of its digits is 12960, while the sum is 31.

The square root of 323416561 is about 17983.7860585584. The cubic root of 323416561 is about 686.4160318152.

The spelling of 323416561 in words is "three hundred twenty-three million, four hundred sixteen thousand, five hundred sixty-one".