231226769 has 2 divisors, whose sum is σ = 231226770. Its totient is φ = 231226768.

The previous prime is 231226739. The next prime is 231226771. The reversal of 231226769 is 967622132.

231226769 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 can be written as a sum of positive squares in only one way, i.e., 118548544 + 112678225 = 10888^2 + 10615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231226769 is a prime.

It is a super-2 number, since 2×231226769² = 106931637404358722, which contains 22 as substring.

Together with 231226771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231226729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115613384 + 115613385.

It is an arithmetic number, because the mean of its divisors is an integer number (115613385).

Almost surely, 2^231226769 is an apocalyptic number.

It is an amenable number.

231226769 is a deficient number, since it is larger than the sum of its proper divisors (1).

231226769 is an equidigital number, since it uses as much as digits as its factorization.

231226769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 231226769 is about 15206.1424759865. The cubic root of 231226769 is about 613.7799586064.

The spelling of 231226769 in words is "two hundred thirty-one million, two hundred twenty-six thousand, seven hundred sixty-nine".