133818818331 has 16 divisors (see below), whose sum is σ = 194711610240. Its totient is φ = 81074790720.

The previous prime is 133818818323. The next prime is 133818818333.

133818818331 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 133818818331 - 2³ = 133818818323 is a prime.

It is a super-3 number, since 3×133818818331³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (133818818333) 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, 589161 + ... + 784058.

It is an arithmetic number, because the mean of its divisors is an integer number (12169475640).

Almost surely, 2^133818818331 is an apocalyptic number.

133818818331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133818818331 is a deficient number, since it is larger than the sum of its proper divisors (60892791909).

133818818331 is a wasteful number, since it uses less digits than its factorization.

133818818331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376186.

The product of its digits is 331776, while the sum is 48.

The spelling of 133818818331 in words is "one hundred thirty-three billion, eight hundred eighteen million, eight hundred eighteen thousand, three hundred thirty-one".