133330681 has 8 divisors (see below), whose sum is σ = 148546944. Its totient is φ = 118630320.

The previous prime is 133330679. The next prime is 133330697. The reversal of 133330681 is 186033331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133330681 - 2¹ = 133330679 is a prime.

It is a super-2 number, since 2×133330681² = 35554140991847522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133330651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128430 + ... + 129463.

It is an arithmetic number, because the mean of its divisors is an integer number (18568368).

Almost surely, 2^133330681 is an apocalyptic number.

133330681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133330681 is a deficient number, since it is larger than the sum of its proper divisors (15216263).

133330681 is a wasteful number, since it uses less digits than its factorization.

133330681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257951.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 133330681 is about 11546.8905338191. The cubic root of 133330681 is about 510.8695673932.

The spelling of 133330681 in words is "one hundred thirty-three million, three hundred thirty thousand, six hundred eighty-one".