135223427 has 2 divisors, whose sum is σ = 135223428. Its totient is φ = 135223426.

The previous prime is 135223393. The next prime is 135223469. The reversal of 135223427 is 724322531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135223427 - 2²² = 131029123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135223427.

It is not a weakly prime, because it can be changed into another prime (135223477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67611713 + 67611714.

It is an arithmetic number, because the mean of its divisors is an integer number (67611714).

Almost surely, 2^135223427 is an apocalyptic number.

135223427 is a deficient number, since it is larger than the sum of its proper divisors (1).

135223427 is an equidigital number, since it uses as much as digits as its factorization.

135223427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 29.

The square root of 135223427 is about 11628.5608309885. The cubic root of 135223427 is about 513.2756315738.

Adding to 135223427 its reverse (724322531), we get a palindrome (859545958).

The spelling of 135223427 in words is "one hundred thirty-five million, two hundred twenty-three thousand, four hundred twenty-seven".