133980173 has 4 divisors (see below), whose sum is σ = 134043840. Its totient is φ = 133916508.

The previous prime is 133980163. The next prime is 133980181. The reversal of 133980173 is 371089331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 371089331 = 10093 ⋅36767.

It is a cyclic number.

It is not a de Polignac number, because 133980173 - 2⁸ = 133979917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133980103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28565 + ... + 32922.

It is an arithmetic number, because the mean of its divisors is an integer number (33510960).

Almost surely, 2^133980173 is an apocalyptic number.

It is an amenable number.

133980173 is a deficient number, since it is larger than the sum of its proper divisors (63667).

133980173 is an equidigital number, since it uses as much as digits as its factorization.

133980173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63666.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 133980173 is about 11574.9804751455. The cubic root of 133980173 is about 511.6977548100.

The spelling of 133980173 in words is "one hundred thirty-three million, nine hundred eighty thousand, one hundred seventy-three".