133701217 has 4 divisors (see below), whose sum is σ = 143985940. Its totient is φ = 123416496.

The previous prime is 133701199. The next prime is 133701251. The reversal of 133701217 is 712107331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59120721 + 74580496 = 7689^2 + 8636^2 .

It is a cyclic number.

It is not a de Polignac number, because 133701217 - 2¹⁵ = 133668449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133701191 and 133701200.

It is not an unprimeable number, because it can be changed into a prime (133701317) 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, 5142342 + ... + 5142367.

It is an arithmetic number, because the mean of its divisors is an integer number (35996485).

Almost surely, 2^133701217 is an apocalyptic number.

It is an amenable number.

133701217 is a deficient number, since it is larger than the sum of its proper divisors (10284723).

133701217 is a wasteful number, since it uses less digits than its factorization.

133701217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10284722.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 133701217 is about 11562.9242408657. The cubic root of 133701217 is about 511.3423780003.

Adding to 133701217 its reverse (712107331), we get a palindrome (845808548).

The spelling of 133701217 in words is "one hundred thirty-three million, seven hundred one thousand, two hundred seventeen".