3123315320 has 32 divisors (see below), whose sum is σ = 7190892720. Its totient is φ = 1220271360.

The previous prime is 3123315311. The next prime is 3123315389. The reversal of 3123315320 is 235133213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906221 + ... + 909660.

Almost surely, 2^3123315320 is an apocalyptic number.

It is an amenable number.

3123315320 is an abundant number, since it is smaller than the sum of its proper divisors (4067577400).

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

3123315320 is a wasteful number, since it uses less digits than its factorization.

3123315320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815935 (or 1815931 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 3123315320 is about 55886.6291701334. The cubic root of 3123315320 is about 1461.7461000572.

Adding to 3123315320 its reverse (235133213), we get a palindrome (3358448533).

The spelling of 3123315320 in words is "three billion, one hundred twenty-three million, three hundred fifteen thousand, three hundred twenty".