231116663 has 2 divisors, whose sum is σ = 231116664. Its totient is φ = 231116662.

The previous prime is 231116621. The next prime is 231116681. The reversal of 231116663 is 366611132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231116663 - 2¹⁴ = 231100279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231116603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115558331 + 115558332.

It is an arithmetic number, because the mean of its divisors is an integer number (115558332).

Almost surely, 2^231116663 is an apocalyptic number.

231116663 is a deficient number, since it is larger than the sum of its proper divisors (1).

231116663 is an equidigital number, since it uses as much as digits as its factorization.

231116663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 231116663 is about 15202.5216000504. The cubic root of 231116663 is about 613.6825195048.

Adding to 231116663 its reverse (366611132), we get a palindrome (597727795).

The spelling of 231116663 in words is "two hundred thirty-one million, one hundred sixteen thousand, six hundred sixty-three".