311444313 has 16 divisors (see below), whose sum is σ = 425472960. Its totient is φ = 202535424.

The previous prime is 311444297. The next prime is 311444317. The reversal of 311444313 is 313444113.

It is not a de Polignac number, because 311444313 - 2⁴ = 311444297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311444317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165345 + ... + 167217.

It is an arithmetic number, because the mean of its divisors is an integer number (26592060).

Almost surely, 2^311444313 is an apocalyptic number.

It is an amenable number.

311444313 is a deficient number, since it is larger than the sum of its proper divisors (114028647).

311444313 is a wasteful number, since it uses less digits than its factorization.

311444313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208.

The product of its digits is 1728, while the sum is 24.

The square root of 311444313 is about 17647.7849318264. The cubic root of 311444313 is about 677.8393886054.

Adding to 311444313 its reverse (313444113), we get a palindrome (624888426).

The spelling of 311444313 in words is "three hundred eleven million, four hundred forty-four thousand, three hundred thirteen".