135223199 has 4 divisors (see below), whose sum is σ = 135655536. Its totient is φ = 134790864.

The previous prime is 135223189. The next prime is 135223217. The reversal of 135223199 is 991322531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135223199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135223159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215699 + ... + 216324.

It is an arithmetic number, because the mean of its divisors is an integer number (33913884).

Almost surely, 2^135223199 is an apocalyptic number.

135223199 is a deficient number, since it is larger than the sum of its proper divisors (432337).

135223199 is an equidigital number, since it uses as much as digits as its factorization.

135223199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432336.

The product of its digits is 14580, while the sum is 35.

The square root of 135223199 is about 11628.5510275356. The cubic root of 135223199 is about 513.2753430960.

The spelling of 135223199 in words is "one hundred thirty-five million, two hundred twenty-three thousand, one hundred ninety-nine".