133223243 has 2 divisors, whose sum is σ = 133223244. Its totient is φ = 133223242.

The previous prime is 133223219. The next prime is 133223249. The reversal of 133223243 is 342322331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133223243 - 2²⁰ = 132174667 is a prime.

It is not a weakly prime, because it can be changed into another prime (133223249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66611621 + 66611622.

It is an arithmetic number, because the mean of its divisors is an integer number (66611622).

Almost surely, 2^133223243 is an apocalyptic number.

133223243 is a deficient number, since it is larger than the sum of its proper divisors (1).

133223243 is an equidigital number, since it uses as much as digits as its factorization.

133223243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 23.

The square root of 133223243 is about 11542.2373481054. The cubic root of 133223243 is about 510.7323107783.

Adding to 133223243 its reverse (342322331), we get a palindrome (475545574).

The spelling of 133223243 in words is "one hundred thirty-three million, two hundred twenty-three thousand, two hundred forty-three".