133213336 has 8 divisors (see below), whose sum is σ = 249775020. Its totient is φ = 66606664.

The previous prime is 133213277. The next prime is 133213337. The reversal of 133213336 is 633312331.

133213336 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 133213336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325826 + ... + 8325841.

Almost surely, 2^133213336 is an apocalyptic number.

It is an amenable number.

133213336 is a deficient number, since it is larger than the sum of its proper divisors (116561684).

133213336 is a wasteful number, since it uses less digits than its factorization.

133213336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651673 (or 16651669 counting only the distinct ones).

The product of its digits is 2916, while the sum is 25.

The square root of 133213336 is about 11541.8081772312. The cubic root of 133213336 is about 510.7196504489.

Adding to 133213336 its reverse (633312331), we get a palindrome (766525667).

The spelling of 133213336 in words is "one hundred thirty-three million, two hundred thirteen thousand, three hundred thirty-six".