3113111220 has 48 divisors (see below), whose sum is σ = 8755837440. Its totient is φ = 826436736.

The previous prime is 3113111167. The next prime is 3113111273. The reversal of 3113111220 is 221113113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3113111167) and next prime (3113111273).

It is a super-2 number, since 2×3113111220² = 19382922936179776800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3113111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102955 + ... + 129714.

It is an arithmetic number, because the mean of its divisors is an integer number (182413280).

Almost surely, 2^3113111220 is an apocalyptic number.

3113111220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3113111220 is an abundant number, since it is smaller than the sum of its proper divisors (5642726220).

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

3113111220 is a wasteful number, since it uses less digits than its factorization.

3113111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232904 (or 232902 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 3113111220 is about 55795.2616267726. The cubic root of 3113111220 is about 1460.1524861063.

Adding to 3113111220 its reverse (221113113), we get a palindrome (3334224333).

The spelling of 3113111220 in words is "three billion, one hundred thirteen million, one hundred eleven thousand, two hundred twenty".