135812223 has 6 divisors (see below), whose sum is σ = 196173224. Its totient is φ = 90541476.

The previous prime is 135812219. The next prime is 135812231. The reversal of 135812223 is 322218531.

It is not a de Polignac number, because 135812223 - 2² = 135812219 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 (135812203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7545115 + ... + 7545132.

Almost surely, 2^135812223 is an apocalyptic number.

135812223 is a deficient number, since it is larger than the sum of its proper divisors (60361001).

135812223 is a wasteful number, since it uses less digits than its factorization.

135812223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090253 (or 15090250 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 135812223 is about 11653.8501363283. The cubic root of 135812223 is about 514.0195289506.

The spelling of 135812223 in words is "one hundred thirty-five million, eight hundred twelve thousand, two hundred twenty-three".