133705273 has 8 divisors (see below), whose sum is σ = 146707848. Its totient is φ = 121090944.

The previous prime is 133705199. The next prime is 133705277. The reversal of 133705273 is 372507331.

It can be written as a sum of positive squares in 4 ways, for example, as 19386409 + 114318864 = 4403^2 + 10692^2 .

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

It is not a de Polignac number, because 133705273 - 2²¹ = 131608121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133705277) 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, 96340 + ... + 97717.

It is an arithmetic number, because the mean of its divisors is an integer number (18338481).

Almost surely, 2^133705273 is an apocalyptic number.

133705273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133705273 is a deficient number, since it is larger than the sum of its proper divisors (13002575).

133705273 is a wasteful number, since it uses less digits than its factorization.

133705273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194123.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 133705273 is about 11563.0996276950. The cubic root of 133705273 is about 511.3475486930.

The spelling of 133705273 in words is "one hundred thirty-three million, seven hundred five thousand, two hundred seventy-three".