3115503220 has 12 divisors (see below), whose sum is σ = 6542556804. Its totient is φ = 1246201280.

The previous prime is 3115503211. The next prime is 3115503227. The reversal of 3115503220 is 223055113.

It can be written as a sum of positive squares in 2 ways, for example, as 1873504656 + 1241998564 = 43284^2 + 35242^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3115503191 and 3115503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115503227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77887561 + ... + 77887600.

It is an arithmetic number, because the mean of its divisors is an integer number (545213067).

Almost surely, 2^3115503220 is an apocalyptic number.

It is an amenable number.

3115503220 is an abundant number, since it is smaller than the sum of its proper divisors (3427053584).

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

3115503220 is a wasteful number, since it uses less digits than its factorization.

3115503220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155775170 (or 155775168 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3115503220 is about 55816.6930227867. The cubic root of 3115503220 is about 1460.5263661609.

Adding to 3115503220 its reverse (223055113), we get a palindrome (3338558333).

The spelling of 3115503220 in words is "three billion, one hundred fifteen million, five hundred three thousand, two hundred twenty".