133330997 has 2 divisors, whose sum is σ = 133330998. Its totient is φ = 133330996.

The previous prime is 133330937. The next prime is 133331041. The reversal of 133330997 is 799033331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104019601 + 29311396 = 10199^2 + 5414^2 .

It is a cyclic number.

It is not a de Polignac number, because 133330997 - 2²⁶ = 66222133 is a prime.

It is a super-2 number, since 2×133330997² = 35554309522028018, 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 133330997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133330937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66665498 + 66665499.

It is an arithmetic number, because the mean of its divisors is an integer number (66665499).

Almost surely, 2^133330997 is an apocalyptic number.

It is an amenable number.

133330997 is a deficient number, since it is larger than the sum of its proper divisors (1).

133330997 is an equidigital number, since it uses as much as digits as its factorization.

133330997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 38.

The square root of 133330997 is about 11546.9042171484. The cubic root of 133330997 is about 510.8699709878.

The spelling of 133330997 in words is "one hundred thirty-three million, three hundred thirty thousand, nine hundred ninety-seven".