133113318 has 32 divisors (see below), whose sum is σ = 295959552. Its totient is φ = 39636000.

The previous prime is 133113317. The next prime is 133113329. The reversal of 133113318 is 813311331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133113311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25108 + ... + 29943.

It is an arithmetic number, because the mean of its divisors is an integer number (9248736).

Almost surely, 2^133113318 is an apocalyptic number.

133113318 is an abundant number, since it is smaller than the sum of its proper divisors (162846234).

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

133113318 is a wasteful number, since it uses less digits than its factorization.

133113318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100.

The product of its digits is 648, while the sum is 24.

The square root of 133113318 is about 11537.4745070141. The cubic root of 133113318 is about 510.5918005179.

Adding to 133113318 its reverse (813311331), we get a palindrome (946424649).

The spelling of 133113318 in words is "one hundred thirty-three million, one hundred thirteen thousand, three hundred eighteen".