3113881280 has 112 divisors (see below), whose sum is σ = 7565965056. Its totient is φ = 1220398080.

The previous prime is 3113881237. The next prime is 3113881297. The reversal of 3113881280 is 821883113.

It is a self number, because there is not a number n which added to its sum of digits gives 3113881280.

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, 6667607 + ... + 6668073.

Almost surely, 2^3113881280 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 3113881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3782982528).

3113881280 is an abundant number, since it is smaller than the sum of its proper divisors (4452083776).

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

3113881280 is a wasteful number, since it uses less digits than its factorization.

3113881280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 3113881280 is about 55802.1619652859. The cubic root of 3113881280 is about 1460.2728707468.

The spelling of 3113881280 in words is "three billion, one hundred thirteen million, eight hundred eighty-one thousand, two hundred eighty".