117197360281 has 3 divisors (see below), whose sum is σ = 117197702623. Its totient is φ = 117197017940.

The previous prime is 117197360263. The next prime is 117197360317. The reversal of 117197360281 is 182063791711.

The square root of 117197360281 is 342341.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 182063791711 = 257 ⋅708419423.

It can be written as a sum of positive squares in only one way, i.e., 47237110281 + 69960250000 = 217341^2 + 264500^2 .

It is not a de Polignac number, because 117197360281 - 2⁷ = 117197360153 is a prime.

It is a super-2 number, since 2×117197360281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117197360081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 171171 + ... + 513511.

Almost surely, 2^117197360281 is an apocalyptic number.

117197360281 is the 342341-st square number.

117197360281 is the 171171-st centered octagonal number.

It is an amenable number.

117197360281 is a deficient number, since it is larger than the sum of its proper divisors (342342).

117197360281 is an frugal number, since it uses more digits than its factorization.

117197360281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684682 (or 342341 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 117197360281 in words is "one hundred seventeen billion, one hundred ninety-seven million, three hundred sixty thousand, two hundred eighty-one".