133223536 has 20 divisors (see below), whose sum is σ = 258311592. Its totient is φ = 66562496.

The previous prime is 133223533. The next prime is 133223551. The reversal of 133223536 is 635322331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223533) 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, 29970 + ... + 34126.

Almost surely, 2^133223536 is an apocalyptic number.

133223536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133223536 is a deficient number, since it is larger than the sum of its proper divisors (125088056).

133223536 is a wasteful number, since it uses less digits than its factorization.

133223536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6168 (or 6162 counting only the distinct ones).

The product of its digits is 9720, while the sum is 28.

The square root of 133223536 is about 11542.2500406117. The cubic root of 133223536 is about 510.7326851986.

Adding to 133223536 its reverse (635322331), we get a palindrome (768545867).

The spelling of 133223536 in words is "one hundred thirty-three million, two hundred twenty-three thousand, five hundred thirty-six".