3121103320 has 32 divisors (see below), whose sum is σ = 7118687520. Its totient is φ = 1231338240.

The previous prime is 3121103303. The next prime is 3121103333. The reversal of 3121103320 is 233011213.

It is a junction number, because it is equal to n+sod(n) for n = 3121103294 and 3121103303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531516 + ... + 537355.

It is an arithmetic number, because the mean of its divisors is an integer number (222458985).

Almost surely, 2^3121103320 is an apocalyptic number.

It is an amenable number.

3121103320 is an abundant number, since it is smaller than the sum of its proper divisors (3997584200).

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

3121103320 is a wasteful number, since it uses less digits than its factorization.

3121103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068955 (or 1068951 counting only the distinct ones).

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

The square root of 3121103320 is about 55866.8356003810. The cubic root of 3121103320 is about 1461.4009384090.

Adding to 3121103320 its reverse (233011213), we get a palindrome (3354114533).

The spelling of 3121103320 in words is "three billion, one hundred twenty-one million, one hundred three thousand, three hundred twenty".