311444304020 has 12 divisors (see below), whose sum is σ = 654033038484. Its totient is φ = 124577721600.

The previous prime is 311444304007. The next prime is 311444304023. The reversal of 311444304020 is 20403444113.

It can be written as a sum of positive squares in 2 ways, for example, as 92418432016 + 219025872004 = 304004^2 + 468002^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311444304023) 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, 7786107581 + ... + 7786107620.

It is an arithmetic number, because the mean of its divisors is an integer number (54502753207).

Almost surely, 2^311444304020 is an apocalyptic number.

It is an amenable number.

311444304020 is an abundant number, since it is smaller than the sum of its proper divisors (342588734464).

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

311444304020 is a wasteful number, since it uses less digits than its factorization.

311444304020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15572215210 (or 15572215208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 311444304020 its reverse (20403444113), we get a palindrome (331847748133).

The spelling of 311444304020 in words is "three hundred eleven billion, four hundred forty-four million, three hundred four thousand, twenty".