133223143 has 4 divisors (see below), whose sum is σ = 133354648. Its totient is φ = 133091640.

The previous prime is 133223119. The next prime is 133223147. The reversal of 133223143 is 341322331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341322331 = 7 ⋅48760333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133223143 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 (133223147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64221 + ... + 66262.

It is an arithmetic number, because the mean of its divisors is an integer number (33338662).

Almost surely, 2^133223143 is an apocalyptic number.

133223143 is a deficient number, since it is larger than the sum of its proper divisors (131505).

133223143 is a wasteful number, since it uses less digits than its factorization.

133223143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131504.

The product of its digits is 1296, while the sum is 22.

The square root of 133223143 is about 11542.2330161889. The cubic root of 133223143 is about 510.7321829897.

Adding to 133223143 its reverse (341322331), we get a palindrome (474545474).

The spelling of 133223143 in words is "one hundred thirty-three million, two hundred twenty-three thousand, one hundred forty-three".