212311311403344 has 80 divisors (see below), whose sum is σ = 561309879582720. Its totient is φ = 69120080122240.

The previous prime is 212311311403337. The next prime is 212311311403351. The reversal of 212311311403344 is 443304113113212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212311311403337) and next prime (212311311403351).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97154892 + ... + 99316139.

It is an arithmetic number, because the mean of its divisors is an integer number (7016373494784).

Almost surely, 2^{212311311403344} is an apocalyptic number.

212311311403344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212311311403344 is an abundant number, since it is smaller than the sum of its proper divisors (348998568179376).

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

212311311403344 is a wasteful number, since it uses less digits than its factorization.

212311311403344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196471568 (or 196471562 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 212311311403344 its reverse (443304113113212), we get a palindrome (655615424516556).

The spelling of 212311311403344 in words is "two hundred twelve trillion, three hundred eleven billion, three hundred eleven million, four hundred three thousand, three hundred forty-four".