231616163 has 2 divisors, whose sum is σ = 231616164. Its totient is φ = 231616162.

The previous prime is 231616157. The next prime is 231616193. The reversal of 231616163 is 361616132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231616163 - 2¹⁴ = 231599779 is a prime.

It is not a weakly prime, because it can be changed into another prime (231616153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115808081 + 115808082.

It is an arithmetic number, because the mean of its divisors is an integer number (115808082).

Almost surely, 2^231616163 is an apocalyptic number.

231616163 is a deficient number, since it is larger than the sum of its proper divisors (1).

231616163 is an equidigital number, since it uses as much as digits as its factorization.

231616163 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 231616163 is about 15218.9409289871. The cubic root of 231616163 is about 614.1243077157.

The spelling of 231616163 in words is "two hundred thirty-one million, six hundred sixteen thousand, one hundred sixty-three".