133345361 has 2 divisors, whose sum is σ = 133345362. Its totient is φ = 133345360.

The previous prime is 133345349. The next prime is 133345409. The reversal of 133345361 is 163543331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128142400 + 5202961 = 11320^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 133345361 - 2²⁶ = 66236497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133345561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66672680 + 66672681.

It is an arithmetic number, because the mean of its divisors is an integer number (66672681).

Almost surely, 2^133345361 is an apocalyptic number.

It is an amenable number.

133345361 is a deficient number, since it is larger than the sum of its proper divisors (1).

133345361 is an equidigital number, since it uses as much as digits as its factorization.

133345361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 29.

The square root of 133345361 is about 11547.5261852918. The cubic root of 133345361 is about 510.8883159912. Note that the first 3 decimals are identical.

Adding to 133345361 its reverse (163543331), we get a palindrome (296888692).

The spelling of 133345361 in words is "one hundred thirty-three million, three hundred forty-five thousand, three hundred sixty-one".