331106663 has 2 divisors, whose sum is σ = 331106664. Its totient is φ = 331106662.

The previous prime is 331106641. The next prime is 331106723. The reversal of 331106663 is 366601133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331106663 - 2¹⁰ = 331105639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331102663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165553331 + 165553332.

It is an arithmetic number, because the mean of its divisors is an integer number (165553332).

Almost surely, 2^331106663 is an apocalyptic number.

331106663 is a deficient number, since it is larger than the sum of its proper divisors (1).

331106663 is an equidigital number, since it uses as much as digits as its factorization.

331106663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 331106663 is about 18196.3365268946. The cubic root of 331106663 is about 691.8139368285.

Adding to 331106663 its reverse (366601133), we get a palindrome (697707796).

The spelling of 331106663 in words is "three hundred thirty-one million, one hundred six thousand, six hundred sixty-three".