2131100071 has 2 divisors, whose sum is σ = 2131100072. Its totient is φ = 2131100070.

The previous prime is 2131100057. The next prime is 2131100089. The reversal of 2131100071 is 1700011312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131100071 - 2⁹ = 2131099559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131100171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065550035 + 1065550036.

It is an arithmetic number, because the mean of its divisors is an integer number (1065550036).

Almost surely, 2^2131100071 is an apocalyptic number.

2131100071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131100071 is an equidigital number, since it uses as much as digits as its factorization.

2131100071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 2131100071 is about 46163.8394308792. The cubic root of 2131100071 is about 1286.8698161594.

Adding to 2131100071 its reverse (1700011312), we get a palindrome (3831111383).

The spelling of 2131100071 in words is "two billion, one hundred thirty-one million, one hundred thousand, seventy-one".