133817141 has 2 divisors, whose sum is σ = 133817142. Its totient is φ = 133817140.

The previous prime is 133817137. The next prime is 133817143. The reversal of 133817141 is 141718331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120340900 + 13476241 = 10970^2 + 3671^2 .

It is a cyclic number.

It is not a de Polignac number, because 133817141 - 2² = 133817137 is a prime.

Together with 133817143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133817143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66908570 + 66908571.

It is an arithmetic number, because the mean of its divisors is an integer number (66908571).

Almost surely, 2^133817141 is an apocalyptic number.

It is an amenable number.

133817141 is a deficient number, since it is larger than the sum of its proper divisors (1).

133817141 is an equidigital number, since it uses as much as digits as its factorization.

133817141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 133817141 is about 11567.9359005831. The cubic root of 133817141 is about 511.4901196880.

The spelling of 133817141 in words is "one hundred thirty-three million, eight hundred seventeen thousand, one hundred forty-one".