133334681 has 4 divisors (see below), whose sum is σ = 133458432. Its totient is φ = 133210932.

The previous prime is 133334671. The next prime is 133334683. The reversal of 133334681 is 186433331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133334681 is a prime.

It is a super-2 number, since 2×133334681² = 35556274314743522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133334683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60245 + ... + 62418.

It is an arithmetic number, because the mean of its divisors is an integer number (33364608).

Almost surely, 2^133334681 is an apocalyptic number.

It is an amenable number.

133334681 is a deficient number, since it is larger than the sum of its proper divisors (123751).

133334681 is a wasteful number, since it uses less digits than its factorization.

133334681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123750.

The product of its digits is 15552, while the sum is 32.

The square root of 133334681 is about 11547.0637393235. The cubic root of 133334681 is about 510.8746761394.

The spelling of 133334681 in words is "one hundred thirty-three million, three hundred thirty-four thousand, six hundred eighty-one".