71108849131 has 2 divisors, whose sum is σ = 71108849132. Its totient is φ = 71108849130.

The previous prime is 71108849113. The next prime is 71108849191. The reversal of 71108849131 is 13194880117.

Together with previous prime (71108849113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71108849131 - 2⁵ = 71108849099 is a prime.

It is a super-2 number, since 2×71108849131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71108849101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35554424565 + 35554424566.

It is an arithmetic number, because the mean of its divisors is an integer number (35554424566).

Almost surely, 2^71108849131 is an apocalyptic number.

71108849131 is a deficient number, since it is larger than the sum of its proper divisors (1).

71108849131 is an equidigital number, since it uses as much as digits as its factorization.

71108849131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 71108849131 in words is "seventy-one billion, one hundred eight million, eight hundred forty-nine thousand, one hundred thirty-one".