133391336 has 32 divisors (see below), whose sum is σ = 271887840. Its totient is φ = 60984768.

The previous prime is 133391317. The next prime is 133391339. The reversal of 133391336 is 633193331.

It is not an unprimeable number, because it can be changed into a prime (133391339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5135 + ... + 17121.

It is an arithmetic number, because the mean of its divisors is an integer number (8496495).

Almost surely, 2^133391336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133391336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135943920).

133391336 is an abundant number, since it is smaller than the sum of its proper divisors (138496504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133391336 is a wasteful number, since it uses less digits than its factorization.

133391336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12113 (or 12109 counting only the distinct ones).

The product of its digits is 13122, while the sum is 32.

The square root of 133391336 is about 11549.5166998451. The cubic root of 133391336 is about 510.9470241738.

The spelling of 133391336 in words is "one hundred thirty-three million, three hundred ninety-one thousand, three hundred thirty-six".