133461217 has 2 divisors, whose sum is σ = 133461218. Its totient is φ = 133461216.

The previous prime is 133461197. The next prime is 133461241. The reversal of 133461217 is 712164331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116618401 + 16842816 = 10799^2 + 4104^2 .

It is a cyclic number.

It is not a de Polignac number, because 133461217 - 2¹¹ = 133459169 is a prime.

It is not a weakly prime, because it can be changed into another prime (133261217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66730608 + 66730609.

It is an arithmetic number, because the mean of its divisors is an integer number (66730609).

Almost surely, 2^133461217 is an apocalyptic number.

It is an amenable number.

133461217 is a deficient number, since it is larger than the sum of its proper divisors (1).

133461217 is an equidigital number, since it uses as much as digits as its factorization.

133461217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 133461217 is about 11552.5415818338. The cubic root of 133461217 is about 511.0362335052.

The spelling of 133461217 in words is "one hundred thirty-three million, four hundred sixty-one thousand, two hundred seventeen".