133606313 has 2 divisors, whose sum is σ = 133606314. Its totient is φ = 133606312.

The previous prime is 133606261. The next prime is 133606337. The reversal of 133606313 is 313606331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 157609 = 11552^2 + 397^2 .

It is an emirp because it is prime and its reverse (313606331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133606313 is a prime.

It is not a weakly prime, because it can be changed into another prime (133606813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66803156 + 66803157.

It is an arithmetic number, because the mean of its divisors is an integer number (66803157).

Almost surely, 2^133606313 is an apocalyptic number.

It is an amenable number.

133606313 is a deficient number, since it is larger than the sum of its proper divisors (1).

133606313 is an equidigital number, since it uses as much as digits as its factorization.

133606313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 133606313 is about 11558.8197061811. The cubic root of 133606313 is about 511.2213620893.

The spelling of 133606313 in words is "one hundred thirty-three million, six hundred six thousand, three hundred thirteen".