133345318 has 16 divisors (see below), whose sum is σ = 204377040. Its totient is φ = 65235456.

The previous prime is 133345309. The next prime is 133345319. The reversal of 133345318 is 813543331.

It is a super-2 number, since 2×133345318² = 35561947665042248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133345318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133345319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13405 + ... + 21127.

It is an arithmetic number, because the mean of its divisors is an integer number (12773565).

Almost surely, 2^133345318 is an apocalyptic number.

133345318 is a deficient number, since it is larger than the sum of its proper divisors (71031722).

133345318 is an equidigital number, since it uses as much as digits as its factorization.

133345318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911.

The product of its digits is 12960, while the sum is 31.

The square root of 133345318 is about 11547.5243234210. The cubic root of 133345318 is about 510.8882610756. Note that the first 3 decimals are identical.

Adding to 133345318 its reverse (813543331), we get a palindrome (946888649).

The spelling of 133345318 in words is "one hundred thirty-three million, three hundred forty-five thousand, three hundred eighteen".