87231441019 has 2 divisors, whose sum is σ = 87231441020. Its totient is φ = 87231441018.

The previous prime is 87231441007. The next prime is 87231441047. The reversal of 87231441019 is 91014413278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87231441019 - 2⁹ = 87231440507 is a prime.

It is a super-2 number, since 2×87231441019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87231447019) 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 as a sum of consecutive naturals, namely, 43615720509 + 43615720510.

It is an arithmetic number, because the mean of its divisors is an integer number (43615720510).

Almost surely, 2^87231441019 is an apocalyptic number.

87231441019 is a deficient number, since it is larger than the sum of its proper divisors (1).

87231441019 is an equidigital number, since it uses as much as digits as its factorization.

87231441019 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 40.

The spelling of 87231441019 in words is "eighty-seven billion, two hundred thirty-one million, four hundred forty-one thousand, nineteen".