133681608131 has 8 divisors (see below), whose sum is σ = 134421986064. Its totient is φ = 132943235040.

The previous prime is 133681608091. The next prime is 133681608133. The reversal of 133681608131 is 131806186331.

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 133681608131 - 2¹⁰ = 133681607107 is a prime.

It is a super-2 number, since 2×133681608131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133681608133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367385 + ... + 634298.

It is an arithmetic number, because the mean of its divisors is an integer number (16802748258).

Almost surely, 2^133681608131 is an apocalyptic number.

133681608131 is a deficient number, since it is larger than the sum of its proper divisors (740377933).

133681608131 is a wasteful number, since it uses less digits than its factorization.

133681608131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002421.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 133681608131 in words is "one hundred thirty-three billion, six hundred eighty-one million, six hundred eight thousand, one hundred thirty-one".