87031396841 has 2 divisors, whose sum is σ = 87031396842. Its totient is φ = 87031396840.

The previous prime is 87031396819. The next prime is 87031396843. The reversal of 87031396841 is 14869313078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75530979241 + 11500417600 = 274829^2 + 107240^2 .

It is a cyclic number.

It is not a de Polignac number, because 87031396841 - 2³⁴ = 69851527657 is a prime.

Together with 87031396843, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87031396841.

It is not a weakly prime, because it can be changed into another prime (87031396843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43515698420 + 43515698421.

It is an arithmetic number, because the mean of its divisors is an integer number (43515698421).

Almost surely, 2^87031396841 is an apocalyptic number.

It is an amenable number.

87031396841 is a deficient number, since it is larger than the sum of its proper divisors (1).

87031396841 is an equidigital number, since it uses as much as digits as its factorization.

87031396841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 87031396841 in words is "eighty-seven billion, thirty-one million, three hundred ninety-six thousand, eight hundred forty-one".