3103131220 has 48 divisors (see below), whose sum is σ = 7468731648. Its totient is φ = 1060899840.

The previous prime is 3103131203. The next prime is 3103131221. The reversal of 3103131220 is 221313013.

It is a junction number, because it is equal to n+sod(n) for n = 3103131194 and 3103131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103131221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18025 + ... + 80815.

It is an arithmetic number, because the mean of its divisors is an integer number (155598576).

Almost surely, 2^3103131220 is an apocalyptic number.

It is an amenable number.

3103131220 is an abundant number, since it is smaller than the sum of its proper divisors (4365600428).

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

3103131220 is a wasteful number, since it uses less digits than its factorization.

3103131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63160 (or 63158 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3103131220 is about 55705.7557169813. The cubic root of 3103131220 is about 1458.5904986991.

Adding to 3103131220 its reverse (221313013), we get a palindrome (3324444233).

The spelling of 3103131220 in words is "three billion, one hundred three million, one hundred thirty-one thousand, two hundred twenty".