133110281 has 2 divisors, whose sum is σ = 133110282. Its totient is φ = 133110280.

The previous prime is 133110259. The next prime is 133110283. The reversal of 133110281 is 182011331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98406400 + 34703881 = 9920^2 + 5891^2 .

It is an emirp because it is prime and its reverse (182011331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133110281 - 2¹⁸ = 132848137 is a prime.

It is a super-2 number, since 2×133110281² = 35436693815797922, which contains 22 as substring.

Together with 133110283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133110283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66555140 + 66555141.

It is an arithmetic number, because the mean of its divisors is an integer number (66555141).

Almost surely, 2^133110281 is an apocalyptic number.

It is an amenable number.

133110281 is a deficient number, since it is larger than the sum of its proper divisors (1).

133110281 is an equidigital number, since it uses as much as digits as its factorization.

133110281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 133110281 is about 11537.3428916714. The cubic root of 133110281 is about 510.5879174126.

The spelling of 133110281 in words is "one hundred thirty-three million, one hundred ten thousand, two hundred eighty-one".