311322463 has 4 divisors (see below), whose sum is σ = 311842800. Its totient is φ = 310802128.

The previous prime is 311322461. The next prime is 311322481. The reversal of 311322463 is 364223113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311322463 - 2¹ = 311322461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311322461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259270 + ... + 260467.

It is an arithmetic number, because the mean of its divisors is an integer number (77960700).

Almost surely, 2^311322463 is an apocalyptic number.

311322463 is a deficient number, since it is larger than the sum of its proper divisors (520337).

311322463 is an equidigital number, since it uses as much as digits as its factorization.

311322463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520336.

The product of its digits is 2592, while the sum is 25.

The square root of 311322463 is about 17644.3323194730. The cubic root of 311322463 is about 677.7509773979.

Adding to 311322463 its reverse (364223113), we get a palindrome (675545576).

The spelling of 311322463 in words is "three hundred eleven million, three hundred twenty-two thousand, four hundred sixty-three".