3121230320 has 160 divisors (see below), whose sum is σ = 8279470080. Its totient is φ = 1084769280.

The previous prime is 3121230317. The next prime is 3121230347. The reversal of 3121230320 is 230321213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3773747 + ... + 3774573.

It is an arithmetic number, because the mean of its divisors is an integer number (51746688).

Almost surely, 2^3121230320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4139735040).

3121230320 is an abundant number, since it is smaller than the sum of its proper divisors (5158239760).

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

3121230320 is a wasteful number, since it uses less digits than its factorization.

3121230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3121230320 is about 55867.9722202265. The cubic root of 3121230320 is about 1461.4207599681.

Adding to 3121230320 its reverse (230321213), we get a palindrome (3351551533).

The spelling of 3121230320 in words is "three billion, one hundred twenty-one million, two hundred thirty thousand, three hundred twenty".