133118437 has 2 divisors, whose sum is σ = 133118438. Its totient is φ = 133118436.

The previous prime is 133118417. The next prime is 133118473. The reversal of 133118437 is 734811331.

Together with next prime (133118473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129754881 + 3363556 = 11391^2 + 1834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133118437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133118399 and 133118408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133118417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66559218 + 66559219.

It is an arithmetic number, because the mean of its divisors is an integer number (66559219).

Almost surely, 2^133118437 is an apocalyptic number.

It is an amenable number.

133118437 is a deficient number, since it is larger than the sum of its proper divisors (1).

133118437 is an equidigital number, since it uses as much as digits as its factorization.

133118437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 133118437 is about 11537.6963471917. The cubic root of 133118437 is about 510.5983455327.

Adding to 133118437 its reverse (734811331), we get a palindrome (867929768).

The spelling of 133118437 in words is "one hundred thirty-three million, one hundred eighteen thousand, four hundred thirty-seven".