2031113220 has 48 divisors (see below), whose sum is σ = 5718568128. Its totient is φ = 538634880.

The previous prime is 2031113207. The next prime is 2031113251. The reversal of 2031113220 is 223111302.

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 2031113220.

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, 82654 + ... + 104373.

It is an arithmetic number, because the mean of its divisors is an integer number (119136836).

Almost surely, 2^2031113220 is an apocalyptic number.

2031113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031113220 is an abundant number, since it is smaller than the sum of its proper divisors (3687454908).

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

2031113220 is a wasteful number, since it uses less digits than its factorization.

2031113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187220 (or 187218 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031113220 is about 45067.8734798970. The cubic root of 2031113220 is about 1266.4208274821.

Adding to 2031113220 its reverse (223111302), we get a palindrome (2254224522).

The spelling of 2031113220 in words is "two billion, thirty-one million, one hundred thirteen thousand, two hundred twenty".