2111131320 has 32 divisors (see below), whose sum is σ = 6333394320. Its totient is φ = 562968320.

The previous prime is 2111131313. The next prime is 2111131331. The reversal of 2111131320 is 231311112.

It is a happy number.

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 2111131320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8796261 + ... + 8796500.

Almost surely, 2^2111131320 is an apocalyptic number.

2111131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111131320 is an abundant number, since it is smaller than the sum of its proper divisors (4222263000).

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

2111131320 is a wasteful number, since it uses less digits than its factorization.

2111131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17592775 (or 17592771 counting only the distinct ones).

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

The square root of 2111131320 is about 45947.0490891417. The cubic root of 2111131320 is about 1282.8378037774.

Adding to 2111131320 its reverse (231311112), we get a palindrome (2342442432).

The spelling of 2111131320 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, three hundred twenty".