663314231 has 2 divisors, whose sum is σ = 663314232. Its totient is φ = 663314230.

The previous prime is 663314221. The next prime is 663314251. The reversal of 663314231 is 132413366.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663314231 is a prime.

It is a super-2 number, since 2×663314231² = 879971538094242722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 663314194 and 663314203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663314221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331657115 + 331657116.

It is an arithmetic number, because the mean of its divisors is an integer number (331657116).

Almost surely, 2^663314231 is an apocalyptic number.

663314231 is a deficient number, since it is larger than the sum of its proper divisors (1).

663314231 is an equidigital number, since it uses as much as digits as its factorization.

663314231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 663314231 is about 25754.8875167414. The cubic root of 663314231 is about 872.1136921978.

Adding to 663314231 its reverse (132413366), we get a palindrome (795727597).

The spelling of 663314231 in words is "six hundred sixty-three million, three hundred fourteen thousand, two hundred thirty-one".