87231423319 has 2 divisors, whose sum is σ = 87231423320. Its totient is φ = 87231423318.

The previous prime is 87231423143. The next prime is 87231423353. The reversal of 87231423319 is 91332413278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87231423319 - 2⁹ = 87231422807 is a prime.

It is a super-2 number, since 2×87231423319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87231493319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43615711659 + 43615711660.

It is an arithmetic number, because the mean of its divisors is an integer number (43615711660).

Almost surely, 2^87231423319 is an apocalyptic number.

87231423319 is a deficient number, since it is larger than the sum of its proper divisors (1).

87231423319 is an equidigital number, since it uses as much as digits as its factorization.

87231423319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The spelling of 87231423319 in words is "eighty-seven billion, two hundred thirty-one million, four hundred twenty-three thousand, three hundred nineteen".