231226689 has 8 divisors (see below), whose sum is σ = 308372512. Its totient is φ = 154116000.

The previous prime is 231226687. The next prime is 231226691. The reversal of 231226689 is 986622132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231226687) and next prime (231226691).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231226689 - 2¹ = 231226687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231226687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21189 + ... + 30189.

It is an arithmetic number, because the mean of its divisors is an integer number (38546564).

Almost surely, 2^231226689 is an apocalyptic number.

It is an amenable number.

231226689 is a deficient number, since it is larger than the sum of its proper divisors (77145823).

231226689 is an equidigital number, since it uses as much as digits as its factorization.

231226689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17567.

The product of its digits is 62208, while the sum is 39.

The square root of 231226689 is about 15206.1398454703. The cubic root of 231226689 is about 613.7798878210.

The spelling of 231226689 in words is "two hundred thirty-one million, two hundred twenty-six thousand, six hundred eighty-nine".