313303505 has 4 divisors (see below), whose sum is σ = 375964212. Its totient is φ = 250642800.

The previous prime is 313303477. The next prime is 313303541. The reversal of 313303505 is 505303313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505303313 = 1033 ⋅489161.

It can be written as a sum of positive squares in 2 ways, for example, as 70442449 + 242861056 = 8393^2 + 15584^2 .

It is not a de Polignac number, because 313303505 - 2²⁴ = 296526289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31330346 + ... + 31330355.

It is an arithmetic number, because the mean of its divisors is an integer number (93991053).

Almost surely, 2^313303505 is an apocalyptic number.

It is an amenable number.

313303505 is a deficient number, since it is larger than the sum of its proper divisors (62660707).

313303505 is an equidigital number, since it uses as much as digits as its factorization.

313303505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62660706.

The product of its (nonzero) digits is 2025, while the sum is 23.

The square root of 313303505 is about 17700.3814930639. The cubic root of 313303505 is about 679.1855192094.

Adding to 313303505 its reverse (505303313), we get a palindrome (818606818).

The spelling of 313303505 in words is "three hundred thirteen million, three hundred three thousand, five hundred five".