311243456 has 14 divisors (see below), whose sum is σ = 617623860. Its totient is φ = 155621696.

The previous prime is 311243453. The next prime is 311243459. The reversal of 311243456 is 654342113.

It is an interprime number because it is at equal distance from previous prime (311243453) and next prime (311243459).

It is not an unprimeable number, because it can be changed into a prime (311243453) 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 as a sum of consecutive naturals, namely, 2431526 + ... + 2431653.

It is an arithmetic number, because the mean of its divisors is an integer number (44115990).

Almost surely, 2^311243456 is an apocalyptic number.

It is an amenable number.

311243456 is a deficient number, since it is larger than the sum of its proper divisors (306380404).

311243456 is an equidigital number, since it uses as much as digits as its factorization.

311243456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863191 (or 4863181 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 311243456 is about 17642.0932998326. The cubic root of 311243456 is about 677.6936396338.

Adding to 311243456 its reverse (654342113), we get a palindrome (965585569).

The spelling of 311243456 in words is "three hundred eleven million, two hundred forty-three thousand, four hundred fifty-six".