2100131043 has 4 divisors (see below), whose sum is σ = 2800174728. Its totient is φ = 1400087360.

The previous prime is 2100131039. The next prime is 2100131083. The reversal of 2100131043 is 3401310012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100131043 - 2² = 2100131039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100131003) 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 3 ways as a sum of consecutive naturals, for example, 350021838 + ... + 350021843.

It is an arithmetic number, because the mean of its divisors is an integer number (700043682).

Almost surely, 2^2100131043 is an apocalyptic number.

2100131043 is a deficient number, since it is larger than the sum of its proper divisors (700043685).

2100131043 is an equidigital number, since it uses as much as digits as its factorization.

2100131043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700043684.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2100131043 is about 45827.1867236033. The cubic root of 2100131043 is about 1280.6058010899.

Adding to 2100131043 its reverse (3401310012), we get a palindrome (5501441055).

The spelling of 2100131043 in words is "two billion, one hundred million, one hundred thirty-one thousand, forty-three".