133550031 has 8 divisors (see below), whose sum is σ = 187438720. Its totient is φ = 84347352.

The previous prime is 133550023. The next prime is 133550047. The reversal of 133550031 is 130055331.

It is a happy number.

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

It is not a de Polignac number, because 133550031 - 2³ = 133550023 is a prime.

It is a super-2 number, since 2×133550031² = 35671221560201922, 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 (133550051) 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, 1171435 + ... + 1171548.

It is an arithmetic number, because the mean of its divisors is an integer number (23429840).

Almost surely, 2^133550031 is an apocalyptic number.

133550031 is a deficient number, since it is larger than the sum of its proper divisors (53888689).

133550031 is a wasteful number, since it uses less digits than its factorization.

133550031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343005.

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 133550031 is about 11556.3848585966. The cubic root of 133550031 is about 511.1495675731.

The spelling of 133550031 in words is "one hundred thirty-three million, five hundred fifty thousand, thirty-one".