323640633 has 4 divisors (see below), whose sum is σ = 431520848. Its totient is φ = 215760420.

The previous prime is 323640601. The next prime is 323640641. The reversal of 323640633 is 336046323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336046323 = 3 ⋅112015441.

It is not a de Polignac number, because 323640633 - 2⁵ = 323640601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323640633.

It is not an unprimeable number, because it can be changed into a prime (323640683) 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, 53940103 + ... + 53940108.

It is an arithmetic number, because the mean of its divisors is an integer number (107880212).

Almost surely, 2^323640633 is an apocalyptic number.

It is an amenable number.

323640633 is a deficient number, since it is larger than the sum of its proper divisors (107880215).

323640633 is a wasteful number, since it uses less digits than its factorization.

323640633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107880214.

The product of its (nonzero) digits is 23328, while the sum is 30.

The square root of 323640633 is about 17990.0148137793. The cubic root of 323640633 is about 686.5745179337.

Adding to 323640633 its reverse (336046323), we get a palindrome (659686956).

The spelling of 323640633 in words is "three hundred twenty-three million, six hundred forty thousand, six hundred thirty-three".