313320133 has 4 divisors (see below), whose sum is σ = 358080160. Its totient is φ = 268560108.

The previous prime is 313320113. The next prime is 313320151. The reversal of 313320133 is 331023313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331023313 = 29 ⋅11414597.

It is a cyclic number.

It is not a de Polignac number, because 313320133 - 2⁵ = 313320101 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 313320133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313320113) 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, 22380003 + ... + 22380016.

It is an arithmetic number, because the mean of its divisors is an integer number (89520040).

Almost surely, 2^313320133 is an apocalyptic number.

It is an amenable number.

313320133 is a deficient number, since it is larger than the sum of its proper divisors (44760027).

313320133 is an equidigital number, since it uses as much as digits as its factorization.

313320133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44760026.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 313320133 is about 17700.8511942223. The cubic root of 313320133 is about 679.1975344990.

Adding to 313320133 its reverse (331023313), we get a palindrome (644343446).

The spelling of 313320133 in words is "three hundred thirteen million, three hundred twenty thousand, one hundred thirty-three".