133023223 has 4 divisors (see below), whose sum is σ = 133553448. Its totient is φ = 132493000.

The previous prime is 133023221. The next prime is 133023239. The reversal of 133023223 is 322320331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133023223 - 2¹ = 133023221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133023223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133023221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264736 + ... + 265237.

It is an arithmetic number, because the mean of its divisors is an integer number (33388362).

Almost surely, 2^133023223 is an apocalyptic number.

133023223 is a deficient number, since it is larger than the sum of its proper divisors (530225).

133023223 is an equidigital number, since it uses as much as digits as its factorization.

133023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530224.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133023223 is about 11533.5693954647. The cubic root of 133023223 is about 510.4765800143.

Adding to 133023223 its reverse (322320331), we get a palindrome (455343554).

The spelling of 133023223 in words is "one hundred thirty-three million, twenty-three thousand, two hundred twenty-three".