133340313 has 4 divisors (see below), whose sum is σ = 177787088. Its totient is φ = 88893540.

The previous prime is 133340293. The next prime is 133340329. The reversal of 133340313 is 313043331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133340313 - 2⁵ = 133340281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133340313.

It is not an unprimeable number, because it can be changed into a prime (133340213) 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, 22223383 + ... + 22223388.

It is an arithmetic number, because the mean of its divisors is an integer number (44446772).

Almost surely, 2^133340313 is an apocalyptic number.

It is an amenable number.

133340313 is a deficient number, since it is larger than the sum of its proper divisors (44446775).

133340313 is an equidigital number, since it uses as much as digits as its factorization.

133340313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44446774.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 133340313 is about 11547.3076082696. The cubic root of 133340313 is about 510.8818690808.

Adding to 133340313 its reverse (313043331), we get a palindrome (446383644).

The spelling of 133340313 in words is "one hundred thirty-three million, three hundred forty thousand, three hundred thirteen".