133223541 has 12 divisors (see below), whose sum is σ = 195248256. Its totient is φ = 80741320.

The previous prime is 133223533. The next prime is 133223551. The reversal of 133223541 is 145322331.

It is not a de Polignac number, because 133223541 - 2³ = 133223533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183141 + ... + 183866.

It is an arithmetic number, because the mean of its divisors is an integer number (16270688).

Almost surely, 2^133223541 is an apocalyptic number.

133223541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133223541 is a deficient number, since it is larger than the sum of its proper divisors (62024715).

133223541 is a wasteful number, since it uses less digits than its factorization.

133223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367032 (or 367021 counting only the distinct ones).

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

The square root of 133223541 is about 11542.2502572072. The cubic root of 133223541 is about 510.7326915880.

Adding to 133223541 its reverse (145322331), we get a palindrome (278545872).

The spelling of 133223541 in words is "one hundred thirty-three million, two hundred twenty-three thousand, five hundred forty-one".