311322003213 has 16 divisors (see below), whose sum is σ = 447038014976. Its totient is φ = 191577821760.

The previous prime is 311322003211. The next prime is 311322003227. The reversal of 311322003213 is 312300223113.

It is not a de Polignac number, because 311322003213 - 2¹ = 311322003211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311322003213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311322003211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1936548 + ... + 2091138.

It is an arithmetic number, because the mean of its divisors is an integer number (27939875936).

Almost surely, 2^311322003213 is an apocalyptic number.

It is an amenable number.

311322003213 is a deficient number, since it is larger than the sum of its proper divisors (135716011763).

311322003213 is a wasteful number, since it uses less digits than its factorization.

311322003213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206244.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311322003213 its reverse (312300223113), we get a palindrome (623622226326).

The spelling of 311322003213 in words is "three hundred eleven billion, three hundred twenty-two million, three thousand, two hundred thirteen".