3103221020 has 48 divisors (see below), whose sum is σ = 6650175168. Its totient is φ = 1215951360.

The previous prime is 3103221007. The next prime is 3103221031. The reversal of 3103221020 is 201223013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3103220986 and 3103221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804737 + ... + 808583.

It is an arithmetic number, because the mean of its divisors is an integer number (138545316).

Almost surely, 2^3103221020 is an apocalyptic number.

It is an amenable number.

3103221020 is an abundant number, since it is smaller than the sum of its proper divisors (3546954148).

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

3103221020 is a wasteful number, since it uses less digits than its factorization.

3103221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3103221020 is about 55706.5617319899. The cubic root of 3103221020 is about 1458.6045683762.

Adding to 3103221020 its reverse (201223013), we get a palindrome (3304444033).

The spelling of 3103221020 in words is "three billion, one hundred three million, two hundred twenty-one thousand, twenty".