311012221332 has 24 divisors (see below), whose sum is σ = 725806109056. Its totient is φ = 103654893888.

The previous prime is 311012221309. The next prime is 311012221357. The reversal of 311012221332 is 233122210113.

It is a junction number, because it is equal to n+sod(n) for n = 311012221299 and 311012221308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1898908 + ... + 2056179.

Almost surely, 2^311012221332 is an apocalyptic number.

It is an amenable number.

311012221332 is an abundant number, since it is smaller than the sum of its proper divisors (414793887724).

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

311012221332 is a wasteful number, since it uses less digits than its factorization.

311012221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961647 (or 3961645 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311012221332 its reverse (233122210113), we get a palindrome (544134431445).

The spelling of 311012221332 in words is "three hundred eleven billion, twelve million, two hundred twenty-one thousand, three hundred thirty-two".