8397231831 has 18 divisors (see below), whose sum is σ = 12218762192. Its totient is φ = 5557180320.

The previous prime is 8397231827. The next prime is 8397231833. The reversal of 8397231831 is 1381327938.

It is a happy number.

8397231831 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8397231831 - 2² = 8397231827 is a prime.

It is a super-2 number, since 2×8397231831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8397231833) 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 17 ways as a sum of consecutive naturals, for example, 144066 + ... + 193776.

Almost surely, 2^8397231831 is an apocalyptic number.

8397231831 is a deficient number, since it is larger than the sum of its proper divisors (3821530361).

8397231831 is a wasteful number, since it uses less digits than its factorization.

8397231831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49991 (or 49851 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 8397231831 is about 91636.4110547767. The cubic root of 8397231831 is about 2032.5693909308.

The spelling of 8397231831 in words is "eight billion, three hundred ninety-seven million, two hundred thirty-one thousand, eight hundred thirty-one".