8312227493 has 4 divisors (see below), whose sum is σ = 8469062028. Its totient is φ = 8155392960.

The previous prime is 8312227487. The next prime is 8312227513. The reversal of 8312227493 is 3947222138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4305590689 + 4006636804 = 65617^2 + 63298^2 .

It is a cyclic number.

It is not a de Polignac number, because 8312227493 - 2¹⁰ = 8312226469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8312227493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8312227433) 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 in 3 ways as a sum of consecutive naturals, for example, 78417188 + ... + 78417293.

It is an arithmetic number, because the mean of its divisors is an integer number (2117265507).

Almost surely, 2^8312227493 is an apocalyptic number.

It is an amenable number.

8312227493 is a deficient number, since it is larger than the sum of its proper divisors (156834535).

8312227493 is a wasteful number, since it uses less digits than its factorization.

8312227493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156834534.

The product of its digits is 145152, while the sum is 41.

The square root of 8312227493 is about 91171.4181802609. The cubic root of 8312227493 is about 2025.6876183752.

The spelling of 8312227493 in words is "eight billion, three hundred twelve million, two hundred twenty-seven thousand, four hundred ninety-three".