663031323 has 12 divisors (see below), whose sum is σ = 963250080. Its totient is φ = 439464816.

The previous prime is 663031301. The next prime is 663031339. The reversal of 663031323 is 323130366.

663031323 is a `hidden beast` number, since 6 + 630 + 3 + 1 + 3 + 23 = 666.

It is not a de Polignac number, because 663031323 - 2⁸ = 663031067 is a prime.

It is a super-2 number, since 2×663031323² = 879221070558260658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (663031363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211363 + ... + 214476.

It is an arithmetic number, because the mean of its divisors is an integer number (80270840).

Almost surely, 2^663031323 is an apocalyptic number.

663031323 is a deficient number, since it is larger than the sum of its proper divisors (300218757).

663031323 is a wasteful number, since it uses less digits than its factorization.

663031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426018 (or 426015 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

The square root of 663031323 is about 25749.3946142429. The cubic root of 663031323 is about 871.9896871062.

Adding to 663031323 its reverse (323130366), we get a palindrome (986161689).

The spelling of 663031323 in words is "six hundred sixty-three million, thirty-one thousand, three hundred twenty-three".