231622163 has 2 divisors, whose sum is σ = 231622164. Its totient is φ = 231622162.

The previous prime is 231622099. The next prime is 231622169. The reversal of 231622163 is 361226132.

231622163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231622163 - 2⁶ = 231622099 is a prime.

It is not a weakly prime, because it can be changed into another prime (231622169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115811081 + 115811082.

It is an arithmetic number, because the mean of its divisors is an integer number (115811082).

Almost surely, 2^231622163 is an apocalyptic number.

231622163 is a deficient number, since it is larger than the sum of its proper divisors (1).

231622163 is an equidigital number, since it uses as much as digits as its factorization.

231622163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 231622163 is about 15219.1380504942. The cubic root of 231622163 is about 614.1296106185.

Adding to 231622163 its reverse (361226132), we get a palindrome (592848295).

The spelling of 231622163 in words is "two hundred thirty-one million, six hundred twenty-two thousand, one hundred sixty-three".