311440321320420 has 48 divisors (see below), whose sum is σ = 872033998651200. Its totient is φ = 83050647689856.

The previous prime is 311440321320397. The next prime is 311440321320439. The reversal of 311440321320420 is 24023123044113.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52633906 + ... + 58251254.

It is an arithmetic number, because the mean of its divisors is an integer number (18167374971900).

Almost surely, 2^{311440321320420} is an apocalyptic number.

311440321320420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311440321320420 is an abundant number, since it is smaller than the sum of its proper divisors (560593677330780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311440321320420 is a wasteful number, since it uses less digits than its factorization.

311440321320420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541404 (or 6541402 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 311440321320420 its reverse (24023123044113), we get a palindrome (335463444364533).

The spelling of 311440321320420 in words is "three hundred eleven trillion, four hundred forty billion, three hundred twenty-one million, three hundred twenty thousand, four hundred twenty".