133311361 has 2 divisors, whose sum is σ = 133311362. Its totient is φ = 133311360.

The previous prime is 133311349. The next prime is 133311383. The reversal of 133311361 is 163113331.

It is an a-pointer prime, because the next prime (133311383) can be obtained adding 133311361 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133287025 + 24336 = 11545^2 + 156^2 .

It is an emirp because it is prime and its reverse (163113331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133311361 - 2⁵ = 133311329 is a prime.

It is not a weakly prime, because it can be changed into another prime (133311301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66655680 + 66655681.

It is an arithmetic number, because the mean of its divisors is an integer number (66655681).

Almost surely, 2^133311361 is an apocalyptic number.

It is an amenable number.

133311361 is a deficient number, since it is larger than the sum of its proper divisors (1).

133311361 is an equidigital number, since it uses as much as digits as its factorization.

133311361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 22.

The square root of 133311361 is about 11546.0539146498. The cubic root of 133311361 is about 510.8448907102.

Adding to 133311361 its reverse (163113331), we get a palindrome (296424692).

The spelling of 133311361 in words is "one hundred thirty-three million, three hundred eleven thousand, three hundred sixty-one".