2011031320 has 32 divisors (see below), whose sum is σ = 4790988000. Its totient is φ = 757093888.

The previous prime is 2011031317. The next prime is 2011031329. The reversal of 2011031320 is 231301102.

It is a self number, because there is not a number n which added to its sum of digits gives 2011031320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011031329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478020 + ... + 1479379.

It is an arithmetic number, because the mean of its divisors is an integer number (149718375).

Almost surely, 2^2011031320 is an apocalyptic number.

2011031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011031320 is an abundant number, since it is smaller than the sum of its proper divisors (2779956680).

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

2011031320 is a wasteful number, since it uses less digits than its factorization.

2011031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957427 (or 2957423 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2011031320 is about 44844.5238574344. The cubic root of 2011031320 is about 1262.2332360595.

Adding to 2011031320 its reverse (231301102), we get a palindrome (2242332422).

The spelling of 2011031320 in words is "two billion, eleven million, thirty-one thousand, three hundred twenty".