135223143 has 32 divisors (see below), whose sum is σ = 205632000. Its totient is φ = 78288000.

The previous prime is 135223079. The next prime is 135223157. The reversal of 135223143 is 341322531.

It is not a de Polignac number, because 135223143 - 2⁶ = 135223079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135223163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95958 + ... + 97356.

It is an arithmetic number, because the mean of its divisors is an integer number (6426000).

Almost surely, 2^135223143 is an apocalyptic number.

135223143 is a deficient number, since it is larger than the sum of its proper divisors (70408857).

135223143 is a wasteful number, since it uses less digits than its factorization.

135223143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its digits is 2160, while the sum is 24.

The square root of 135223143 is about 11628.5486196688. The cubic root of 135223143 is about 513.2752722417.

Adding to 135223143 its reverse (341322531), we get a palindrome (476545674).

The spelling of 135223143 in words is "one hundred thirty-five million, two hundred twenty-three thousand, one hundred forty-three".