231226766 has 4 divisors (see below), whose sum is σ = 346840152. Its totient is φ = 115613382.

The previous prime is 231226739. The next prime is 231226769. The reversal of 231226766 is 667622132.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231226769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57806690 + ... + 57806693.

It is an arithmetic number, because the mean of its divisors is an integer number (86710038).

Almost surely, 2^231226766 is an apocalyptic number.

231226766 is a deficient number, since it is larger than the sum of its proper divisors (115613386).

231226766 is a wasteful number, since it uses less digits than its factorization.

231226766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115613385.

The product of its digits is 36288, while the sum is 35.

The square root of 231226766 is about 15206.1423773421. The cubic root of 231226766 is about 613.7799559519.

Adding to 231226766 its reverse (667622132), we get a palindrome (898848898).

The spelling of 231226766 in words is "two hundred thirty-one million, two hundred twenty-six thousand, seven hundred sixty-six".