133980217 has 16 divisors (see below), whose sum is σ = 159271552. Its totient is φ = 110315520.

The previous prime is 133980181. The next prime is 133980241. The reversal of 133980217 is 712089331.

It is not a de Polignac number, because 133980217 - 2¹⁵ = 133947449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133980257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14713 + ... + 22009.

It is an arithmetic number, because the mean of its divisors is an integer number (9954472).

Almost surely, 2^133980217 is an apocalyptic number.

It is an amenable number.

133980217 is a deficient number, since it is larger than the sum of its proper divisors (25291335).

133980217 is an equidigital number, since it uses as much as digits as its factorization.

133980217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 133980217 is about 11574.9823757965. The cubic root of 133980217 is about 511.6978108250.

The spelling of 133980217 in words is "one hundred thirty-three million, nine hundred eighty thousand, two hundred seventeen".