2081231000 has 64 divisors (see below), whose sum is σ = 4877664480. Its totient is φ = 831196800.

The previous prime is 2081230997. The next prime is 2081231011. The reversal of 2081231000 is 1321802.

It is a super-2 number, since 2×2081231000² = 8663044950722000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2081231000.

It is a congruent number.

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, 881822 + ... + 884178.

Almost surely, 2^2081231000 is an apocalyptic number.

2081231000 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 2081231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438832240).

2081231000 is an abundant number, since it is smaller than the sum of its proper divisors (2796433480).

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

2081231000 is a wasteful number, since it uses less digits than its factorization.

2081231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2081231000 is about 45620.5107380441. The cubic root of 2081231000 is about 1276.7526326352.

Adding to 2081231000 its reverse (1321802), we get a palindrome (2082552802).

The spelling of 2081231000 in words is "two billion, eighty-one million, two hundred thirty-one thousand".