311444320143412 has 12 divisors (see below), whose sum is σ = 546746890096260. Its totient is φ = 155230922973056.

The previous prime is 311444320143409. The next prime is 311444320143491. The reversal of 311444320143412 is 214341023444113.

It can be written as a sum of positive squares in 2 ways, for example, as 5952789947556 + 305491530195856 = 2439834^2 + 17478316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122809273237 + ... + 122809275772.

It is an arithmetic number, because the mean of its divisors is an integer number (45562240841355).

Almost surely, 2^{311444320143412} is an apocalyptic number.

It is an amenable number.

311444320143412 is a deficient number, since it is larger than the sum of its proper divisors (235302569952848).

311444320143412 is a wasteful number, since it uses less digits than its factorization.

311444320143412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245618549330 (or 245618549328 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 311444320143412 its reverse (214341023444113), we get a palindrome (525785343587525).

The spelling of 311444320143412 in words is "three hundred eleven trillion, four hundred forty-four billion, three hundred twenty million, one hundred forty-three thousand, four hundred twelve".