3112031312220 has 96 divisors (see below), whose sum is σ = 8759113070400. Its totient is φ = 825549942784.

The previous prime is 3112031312219. The next prime is 3112031312227. The reversal of 3112031312220 is 222131302113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112031312227) 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, 121603186 + ... + 121628774.

It is an arithmetic number, because the mean of its divisors is an integer number (91240761150).

Almost surely, 2^{3112031312220} is an apocalyptic number.

3112031312220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3112031312220 is an abundant number, since it is smaller than the sum of its proper divisors (5647081758180).

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

3112031312220 is a wasteful number, since it uses less digits than its factorization.

3112031312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36087 (or 36085 counting only the distinct ones).

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

Adding to 3112031312220 its reverse (222131302113), we get a palindrome (3334162614333).

The spelling of 3112031312220 in words is "three trillion, one hundred twelve billion, thirty-one million, three hundred twelve thousand, two hundred twenty".