313211065 has 4 divisors (see below), whose sum is σ = 375853284. Its totient is φ = 250568848.

The previous prime is 313211057. The next prime is 313211069. The reversal of 313211065 is 560112313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560112313 = 4127 ⋅135719.

It can be written as a sum of positive squares in 2 ways, for example, as 190798969 + 122412096 = 13813^2 + 11064^2 .

It is a cyclic number.

It is not a de Polignac number, because 313211065 - 2³ = 313211057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313211069) 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, 31321102 + ... + 31321111.

It is an arithmetic number, because the mean of its divisors is an integer number (93963321).

Almost surely, 2^313211065 is an apocalyptic number.

It is an amenable number.

313211065 is a deficient number, since it is larger than the sum of its proper divisors (62642219).

313211065 is an equidigital number, since it uses as much as digits as its factorization.

313211065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62642218.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 313211065 is about 17697.7700572699. The cubic root of 313211065 is about 679.1187148868.

Adding to 313211065 its reverse (560112313), we get a palindrome (873323378).

The spelling of 313211065 in words is "three hundred thirteen million, two hundred eleven thousand, sixty-five".