133111061 has 2 divisors, whose sum is σ = 133111062. Its totient is φ = 133111060.

The previous prime is 133111057. The next prime is 133111067. The reversal of 133111061 is 160111331.

133111061 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103408561 + 29702500 = 10169^2 + 5450^2 .

It is an emirp because it is prime and its reverse (160111331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133111061 - 2² = 133111057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133111067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66555530 + 66555531.

It is an arithmetic number, because the mean of its divisors is an integer number (66555531).

Almost surely, 2^133111061 is an apocalyptic number.

It is an amenable number.

133111061 is a deficient number, since it is larger than the sum of its proper divisors (1).

133111061 is an equidigital number, since it uses as much as digits as its factorization.

133111061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 133111061 is about 11537.3766948991. The cubic root of 133111061 is about 510.5889147255.

Adding to 133111061 its reverse (160111331), we get a palindrome (293222392).

The spelling of 133111061 in words is "one hundred thirty-three million, one hundred eleven thousand, sixty-one".