2051131040 has 96 divisors (see below), whose sum is σ = 5553080064. Its totient is φ = 701337600.

The previous prime is 2051131037. The next prime is 2051131051. The reversal of 2051131040 is 401311502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446837 + ... + 451403.

It is an arithmetic number, because the mean of its divisors is an integer number (57844584).

Almost surely, 2^2051131040 is an apocalyptic number.

2051131040 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 2051131040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2776540032).

2051131040 is an abundant number, since it is smaller than the sum of its proper divisors (3501949024).

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

2051131040 is a wasteful number, since it uses less digits than its factorization.

2051131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990 (or 4982 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2051131040 is about 45289.4142156862. The cubic root of 2051131040 is about 1270.5676756201.

Adding to 2051131040 its reverse (401311502), we get a palindrome (2452442542).

The spelling of 2051131040 in words is "two billion, fifty-one million, one hundred thirty-one thousand, forty".