634311323 has 4 divisors (see below), whose sum is σ = 634390728. Its totient is φ = 634231920.

The previous prime is 634311317. The next prime is 634311343. The reversal of 634311323 is 323113436.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 634311323 - 2¹⁸ = 634049179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634311292 and 634311301.

It is not an unprimeable number, because it can be changed into a prime (634311343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26186 + ... + 44207.

It is an arithmetic number, because the mean of its divisors is an integer number (158597682).

Almost surely, 2^634311323 is an apocalyptic number.

634311323 is a deficient number, since it is larger than the sum of its proper divisors (79405).

634311323 is an equidigital number, since it uses as much as digits as its factorization.

634311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79404.

The product of its digits is 3888, while the sum is 26.

The square root of 634311323 is about 25185.5379732099. The cubic root of 634311323 is about 859.2129643820.

Adding to 634311323 its reverse (323113436), we get a palindrome (957424759).

The spelling of 634311323 in words is "six hundred thirty-four million, three hundred eleven thousand, three hundred twenty-three".