231226507 has 2 divisors, whose sum is σ = 231226508. Its totient is φ = 231226506.

The previous prime is 231226477. The next prime is 231226529. The reversal of 231226507 is 705622132.

231226507 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 is a cyclic number.

It is not a de Polignac number, because 231226507 - 2²³ = 222837899 is a prime.

It is not a weakly prime, because it can be changed into another prime (231226577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115613253 + 115613254.

It is an arithmetic number, because the mean of its divisors is an integer number (115613254).

Almost surely, 2^231226507 is an apocalyptic number.

231226507 is a deficient number, since it is larger than the sum of its proper divisors (1).

231226507 is an equidigital number, since it uses as much as digits as its factorization.

231226507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 231226507 is about 15206.1338610444. The cubic root of 231226507 is about 613.7797267843.

Adding to 231226507 its reverse (705622132), we get a palindrome (936848639).

The spelling of 231226507 in words is "two hundred thirty-one million, two hundred twenty-six thousand, five hundred seven".