2081311500 has 96 divisors (see below), whose sum is σ = 6071083200. Its totient is φ = 554073600.

The previous prime is 2081311493. The next prime is 2081311523. The reversal of 2081311500 is 51131802.

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, 1692886 + ... + 1694114.

It is an arithmetic number, because the mean of its divisors is an integer number (63240450).

Almost surely, 2^2081311500 is an apocalyptic number.

2081311500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2081311500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3035541600).

2081311500 is an abundant number, since it is smaller than the sum of its proper divisors (3989771700).

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

2081311500 is a wasteful number, since it uses less digits than its factorization.

2081311500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 2081311500 is about 45621.3930081053. The cubic root of 2081311500 is about 1276.7690936082.

The spelling of 2081311500 in words is "two billion, eighty-one million, three hundred eleven thousand, five hundred".