663006031 has 2 divisors, whose sum is σ = 663006032. Its totient is φ = 663006030.

The previous prime is 663005989. The next prime is 663006037. The reversal of 663006031 is 130600366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663006031 - 2¹⁷ = 662874959 is a prime.

It is a super-2 number, since 2×663006031² = 879153994284745922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663005987 and 663006005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663006037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331503015 + 331503016.

It is an arithmetic number, because the mean of its divisors is an integer number (331503016).

Almost surely, 2^663006031 is an apocalyptic number.

663006031 is a deficient number, since it is larger than the sum of its proper divisors (1).

663006031 is an equidigital number, since it uses as much as digits as its factorization.

663006031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 663006031 is about 25748.9034912169. The cubic root of 663006031 is about 871.9785993226.

Adding to 663006031 its reverse (130600366), we get a palindrome (793606397).

The spelling of 663006031 in words is "six hundred sixty-three million, six thousand, thirty-one".