663530031 has 12 divisors (see below), whose sum is σ = 958674808. Its totient is φ = 442241424.

The previous prime is 663530029. The next prime is 663530039. The reversal of 663530031 is 130035366.

It is not a de Polignac number, because 663530031 - 2¹ = 663530029 is a prime.

It is a super-2 number, since 2×663530031² = 880544204077721922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663529977 and 663530004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663530039) 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, 44661 + ... + 57633.

Almost surely, 2^663530031 is an apocalyptic number.

663530031 is a deficient number, since it is larger than the sum of its proper divisors (295144777).

663530031 is a wasteful number, since it uses less digits than its factorization.

663530031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18662 (or 18659 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 663530031 is about 25759.0766721170. The cubic root of 663530031 is about 872.2082586039.

Adding to 663530031 its reverse (130035366), we get a palindrome (793565397).

The spelling of 663530031 in words is "six hundred sixty-three million, five hundred thirty thousand, thirty-one".