8197385631 has 32 divisors (see below), whose sum is σ = 12009945600. Its totient is φ = 4954711680.

The previous prime is 8197385629. The next prime is 8197385681. The reversal of 8197385631 is 1365837918.

It is not a de Polignac number, because 8197385631 - 2¹ = 8197385629 is a prime.

It is a super-2 number, since 2×8197385631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8197385681) 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 31 ways as a sum of consecutive naturals, for example, 96790 + ... + 160508.

It is an arithmetic number, because the mean of its divisors is an integer number (375310800).

Almost surely, 2^8197385631 is an apocalyptic number.

8197385631 is a deficient number, since it is larger than the sum of its proper divisors (3812559969).

8197385631 is a wasteful number, since it uses less digits than its factorization.

8197385631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63839.

The product of its digits is 1088640, while the sum is 51.

The square root of 8197385631 is about 90539.4147926747. The cubic root of 8197385631 is about 2016.3153454194.

It can be divided in two parts, 8197 and 385631, that added together give a triangular number (393828 = T₈₈₇).

The spelling of 8197385631 in words is "eight billion, one hundred ninety-seven million, three hundred eighty-five thousand, six hundred thirty-one".