133330331 has 2 divisors, whose sum is σ = 133330332. Its totient is φ = 133330330.

The previous prime is 133330297. The next prime is 133330363. The reversal of 133330331 is 133033331.

It is a strong prime.

It is an emirp because it is prime and its reverse (133033331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133330331 is a prime.

It is a super-2 number, since 2×133330331² = 35553954329139122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133330381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66665165 + 66665166.

It is an arithmetic number, because the mean of its divisors is an integer number (66665166).

Almost surely, 2^133330331 is an apocalyptic number.

133330331 is a deficient number, since it is larger than the sum of its proper divisors (1).

133330331 is an equidigital number, since it uses as much as digits as its factorization.

133330331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 20.

The square root of 133330331 is about 11546.8753782138. The cubic root of 133330331 is about 510.8691203730.

Adding to 133330331 its reverse (133033331), we get a palindrome (266363662).

The spelling of 133330331 in words is "one hundred thirty-three million, three hundred thirty thousand, three hundred thirty-one".