3121232310220 has 24 divisors (see below), whose sum is σ = 6588905073408. Its totient is φ = 1241956310400.

The previous prime is 3121232310187. The next prime is 3121232310227. The reversal of 3121232310220 is 220132321213.

It is a super-2 number, since 2×3121232310220² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3121232310191 and 3121232310200.

It is not an unprimeable number, because it can be changed into a prime (3121232310227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408534441 + ... + 408542080.

It is an arithmetic number, because the mean of its divisors is an integer number (274537711392).

Almost surely, 2^{3121232310220} is an apocalyptic number.

It is an amenable number.

3121232310220 is an abundant number, since it is smaller than the sum of its proper divisors (3467672763188).

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

3121232310220 is a wasteful number, since it uses less digits than its factorization.

3121232310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817076721 (or 817076719 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 3121232310220 its reverse (220132321213), we get a palindrome (3341364631433).

The spelling of 3121232310220 in words is "three trillion, one hundred twenty-one billion, two hundred thirty-two million, three hundred ten thousand, two hundred twenty".