2100531043 has 16 divisors (see below), whose sum is σ = 2287787040. Its totient is φ = 1917022464.

The previous prime is 2100531031. The next prime is 2100531053. The reversal of 2100531043 is 3401350012.

It is a cyclic number.

It is not a de Polignac number, because 2100531043 - 2⁵ = 2100531011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100531043.

It is not an unprimeable number, because it can be changed into a prime (2100531053) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 796455 + ... + 799087.

It is an arithmetic number, because the mean of its divisors is an integer number (142986690).

Almost surely, 2^2100531043 is an apocalyptic number.

2100531043 is a deficient number, since it is larger than the sum of its proper divisors (187255997).

2100531043 is a wasteful number, since it uses less digits than its factorization.

2100531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2100531043 is about 45831.5507374560. The cubic root of 2100531043 is about 1280.6870991600.

Adding to 2100531043 its reverse (3401350012), we get a palindrome (5501881055).

The spelling of 2100531043 in words is "two billion, one hundred million, five hundred thirty-one thousand, forty-three".