71003120831 has 2 divisors, whose sum is σ = 71003120832. Its totient is φ = 71003120830.

The previous prime is 71003120819. The next prime is 71003120849. The reversal of 71003120831 is 13802130017.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71003120831 - 2⁶ = 71003120767 is a prime.

It is a super-2 number, since 2×71003120831² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71003120831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71003120861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35501560415 + 35501560416.

It is an arithmetic number, because the mean of its divisors is an integer number (35501560416).

Almost surely, 2^71003120831 is an apocalyptic number.

71003120831 is a deficient number, since it is larger than the sum of its proper divisors (1).

71003120831 is an equidigital number, since it uses as much as digits as its factorization.

71003120831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 71003120831 its reverse (13802130017), we get a palindrome (84805250848).

The spelling of 71003120831 in words is "seventy-one billion, three million, one hundred twenty thousand, eight hundred thirty-one".