17231678397 has 32 divisors (see below), whose sum is σ = 27400412160. Its totient is φ = 10663902720.

The previous prime is 17231678353. The next prime is 17231678483. The reversal of 17231678397 is 79387613271.

17231678397 is a `hidden beast` number, since 17 + 231 + 6 + 7 + 8 + 397 = 666.

It is not a de Polignac number, because 17231678397 - 2¹² = 17231674301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17231678327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223629 + ... + 290642.

It is an arithmetic number, because the mean of its divisors is an integer number (856262880).

Almost surely, 2^17231678397 is an apocalyptic number.

17231678397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

17231678397 is a deficient number, since it is larger than the sum of its proper divisors (10168733763).

17231678397 is a wasteful number, since it uses less digits than its factorization.

17231678397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514370 (or 514364 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 17231678397 in words is "seventeen billion, two hundred thirty-one million, six hundred seventy-eight thousand, three hundred ninety-seven".