3111332420 has 96 divisors (see below), whose sum is σ = 7642252800. Its totient is φ = 1063574400.

The previous prime is 3111332417. The next prime is 3111332431. The reversal of 3111332420 is 242331113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3111332392 and 3111332401.

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, 4438070 + ... + 4438770.

It is an arithmetic number, because the mean of its divisors is an integer number (79606800).

Almost surely, 2^3111332420 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 3111332420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3821126400).

3111332420 is an abundant number, since it is smaller than the sum of its proper divisors (4530920380).

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

3111332420 is a wasteful number, since it uses less digits than its factorization.

3111332420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3111332420 is about 55779.3189273587. The cubic root of 3111332420 is about 1459.8743277079.

Adding to 3111332420 its reverse (242331113), we get a palindrome (3353663533).

The spelling of 3111332420 in words is "three billion, one hundred eleven million, three hundred thirty-two thousand, four hundred twenty".