3012311331220 has 96 divisors (see below), whose sum is σ = 6487058350080. Its totient is φ = 1174694451840.

The previous prime is 3012311331203. The next prime is 3012311331223. The reversal of 3012311331220 is 221331132103.

It is a junction number, because it is equal to n+sod(n) for n = 3012311331191 and 3012311331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012311331223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42303687 + ... + 42374833.

It is an arithmetic number, because the mean of its divisors is an integer number (67573524480).

Almost surely, 2^{3012311331220} is an apocalyptic number.

It is an amenable number.

3012311331220 is an abundant number, since it is smaller than the sum of its proper divisors (3474747018860).

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

3012311331220 is a wasteful number, since it uses less digits than its factorization.

3012311331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71573 (or 71571 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3012311331220 its reverse (221331132103), we get a palindrome (3233642463323).

The spelling of 3012311331220 in words is "three trillion, twelve billion, three hundred eleven million, three hundred thirty-one thousand, two hundred twenty".