133877331 has 12 divisors (see below), whose sum is σ = 221003952. Its totient is φ = 76501296.

The previous prime is 133877327. The next prime is 133877339. The reversal of 133877331 is 133778331.

It is not a de Polignac number, because 133877331 - 2² = 133877327 is a prime.

It is a super-2 number, since 2×133877331² = 35846279511367122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133877339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062456 + ... + 1062581.

It is an arithmetic number, because the mean of its divisors is an integer number (18416996).

Almost surely, 2^133877331 is an apocalyptic number.

133877331 is a deficient number, since it is larger than the sum of its proper divisors (87126621).

133877331 is a wasteful number, since it uses less digits than its factorization.

133877331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125050 (or 2125047 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 133877331 is about 11570.5371958263. The cubic root of 133877331 is about 511.5667964011.

The spelling of 133877331 in words is "one hundred thirty-three million, eight hundred seventy-seven thousand, three hundred thirty-one".