323620993 has 4 divisors (see below), whose sum is σ = 342657540. Its totient is φ = 304584448.

The previous prime is 323620987. The next prime is 323621009. The reversal of 323620993 is 399026323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 280495504 + 43125489 = 16748^2 + 6567^2 .

It is a cyclic number.

It is not a de Polignac number, because 323620993 - 2²⁵ = 290066561 is a prime.

It is a super-3 number, since 3×323620993³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323620903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9518248 + ... + 9518281.

It is an arithmetic number, because the mean of its divisors is an integer number (85664385).

Almost surely, 2^323620993 is an apocalyptic number.

It is an amenable number.

323620993 is a deficient number, since it is larger than the sum of its proper divisors (19036547).

323620993 is a wasteful number, since it uses less digits than its factorization.

323620993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19036546.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 323620993 is about 17989.4689471368. The cubic root of 323620993 is about 686.5606294877.

The spelling of 323620993 in words is "three hundred twenty-three million, six hundred twenty thousand, nine hundred ninety-three".