133223983 has 4 divisors (see below), whose sum is σ = 133542360. Its totient is φ = 132905608.

The previous prime is 133223891. The next prime is 133224001. The reversal of 133223983 is 389322331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389322331 = 19 ⋅20490649.

It is a cyclic number.

It is not a de Polignac number, because 133223983 - 2⁹ = 133223471 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 (133223183) 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, 158560 + ... + 159397.

It is an arithmetic number, because the mean of its divisors is an integer number (33385590).

Almost surely, 2^133223983 is an apocalyptic number.

133223983 is a deficient number, since it is larger than the sum of its proper divisors (318377).

133223983 is an equidigital number, since it uses as much as digits as its factorization.

133223983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318376.

The product of its digits is 23328, while the sum is 34.

The square root of 133223983 is about 11542.2694042376. The cubic root of 133223983 is about 510.7332564121.

The spelling of 133223983 in words is "one hundred thirty-three million, two hundred twenty-three thousand, nine hundred eighty-three".