133000313 has 4 divisors (see below), whose sum is σ = 135180708. Its totient is φ = 130819920.

The previous prime is 133000297. The next prime is 133000319. The reversal of 133000313 is 313000331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 123587689 = 3068^2 + 11117^2 .

It is a cyclic number.

It is not a de Polignac number, because 133000313 - 2⁴ = 133000297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133000319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090106 + ... + 1090227.

It is an arithmetic number, because the mean of its divisors is an integer number (33795177).

Almost surely, 2^133000313 is an apocalyptic number.

It is an amenable number.

133000313 is a deficient number, since it is larger than the sum of its proper divisors (2180395).

133000313 is an equidigital number, since it uses as much as digits as its factorization.

133000313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180394.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 133000313 is about 11532.5761649338. The cubic root of 133000313 is about 510.4472726256.

Adding to 133000313 its reverse (313000331), we get a palindrome (446000644).

The spelling of 133000313 in words is "one hundred thirty-three million, three hundred thirteen", and thus it is an aban number.