117731483971397 has 4 divisors (see below), whose sum is σ = 117731596267116. Its totient is φ = 117731371675680.

The previous prime is 117731483971391. The next prime is 117731483971469. The reversal of 117731483971397 is 793179384137711.

It is a happy number.

It is a Cunningham number, because it is equal to 10850414²+1.

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 3786939352036 + 113944544619361 = 1946006^2 + 10674481^2 .

It is a cyclic number.

It is not a de Polignac number, because 117731483971397 - 2⁸ = 117731483971141 is a prime.

It is a super-2 number, since 2×117731483971397² (a number of 29 digits) contains 22 as substring.

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 117731483971397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117731483971391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54560288 + ... + 56677049.

It is an arithmetic number, because the mean of its divisors is an integer number (29432899066779).

Almost surely, 2^{117731483971397} is an apocalyptic number.

It is an amenable number.

117731483971397 is a deficient number, since it is larger than the sum of its proper divisors (112295719).

117731483971397 is a wasteful number, since it uses less digits than its factorization.

117731483971397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112295718.

The product of its digits is 168031584, while the sum is 71.

The spelling of 117731483971397 in words is "one hundred seventeen trillion, seven hundred thirty-one billion, four hundred eighty-three million, nine hundred seventy-one thousand, three hundred ninety-seven".