117313561 has 8 divisors (see below), whose sum is σ = 118589184. Its totient is φ = 116044800.

The previous prime is 117313541. The next prime is 117313577. The reversal of 117313561 is 165313711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117313561 - 2¹³ = 117305369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117313541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37296 + ... + 40318.

It is an arithmetic number, because the mean of its divisors is an integer number (14823648).

Almost surely, 2^117313561 is an apocalyptic number.

It is an amenable number.

117313561 is a deficient number, since it is larger than the sum of its proper divisors (1275623).

117313561 is a wasteful number, since it uses less digits than its factorization.

117313561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431.

The product of its digits is 1890, while the sum is 28.

The square root of 117313561 is about 10831.1384904820. The cubic root of 117313561 is about 489.5338632439.

The spelling of 117313561 in words is "one hundred seventeen million, three hundred thirteen thousand, five hundred sixty-one".