231217967 has 2 divisors, whose sum is σ = 231217968. Its totient is φ = 231217966.

The previous prime is 231217963. The next prime is 231217993. The reversal of 231217967 is 769712132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231217967 - 2² = 231217963 is a prime.

It is a super-2 number, since 2×231217967² = 106923496527226178, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231217967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231217963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115608983 + 115608984.

It is an arithmetic number, because the mean of its divisors is an integer number (115608984).

Almost surely, 2^231217967 is an apocalyptic number.

231217967 is a deficient number, since it is larger than the sum of its proper divisors (1).

231217967 is an equidigital number, since it uses as much as digits as its factorization.

231217967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 231217967 is about 15205.8530507170. The cubic root of 231217967 is about 613.7721703505.

The spelling of 231217967 in words is "two hundred thirty-one million, two hundred seventeen thousand, nine hundred sixty-seven".