231422167 has 2 divisors, whose sum is σ = 231422168. Its totient is φ = 231422166.

The previous prime is 231422129. The next prime is 231422171. The reversal of 231422167 is 761224132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231422167 - 2⁷ = 231422039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231422197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115711083 + 115711084.

It is an arithmetic number, because the mean of its divisors is an integer number (115711084).

Almost surely, 2^231422167 is an apocalyptic number.

231422167 is a deficient number, since it is larger than the sum of its proper divisors (1).

231422167 is an equidigital number, since it uses as much as digits as its factorization.

231422167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 231422167 is about 15212.5660885993. The cubic root of 231422167 is about 613.9528013530.

Adding to 231422167 its reverse (761224132), we get a palindrome (992646299).

The spelling of 231422167 in words is "two hundred thirty-one million, four hundred twenty-two thousand, one hundred sixty-seven".