133696831 has 8 divisors (see below), whose sum is σ = 139379328. Its totient is φ = 128100000.

The previous prime is 133696819. The next prime is 133696867. The reversal of 133696831 is 138696331.

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 133696831 - 2⁹ = 133696319 is a prime.

It is a super-2 number, since 2×133696831² = 35749685238885122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133696231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18220 + ... + 24481.

It is an arithmetic number, because the mean of its divisors is an integer number (17422416).

Almost surely, 2^133696831 is an apocalyptic number.

133696831 is a deficient number, since it is larger than the sum of its proper divisors (5682497).

133696831 is a wasteful number, since it uses less digits than its factorization.

133696831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42833.

The product of its digits is 69984, while the sum is 40.

The square root of 133696831 is about 11562.7345814042. The cubic root of 133696831 is about 511.3367864975.

The spelling of 133696831 in words is "one hundred thirty-three million, six hundred ninety-six thousand, eight hundred thirty-one".