117215873 has 2 divisors, whose sum is σ = 117215874. Its totient is φ = 117215872.

The previous prime is 117215827. The next prime is 117215887. The reversal of 117215873 is 378512711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114233344 + 2982529 = 10688^2 + 1727^2 .

It is an emirp because it is prime and its reverse (378512711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117215873 - 2¹⁰ = 117214849 is a prime.

It is not a weakly prime, because it can be changed into another prime (117215773) 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 as a sum of consecutive naturals, namely, 58607936 + 58607937.

It is an arithmetic number, because the mean of its divisors is an integer number (58607937).

Almost surely, 2^117215873 is an apocalyptic number.

It is an amenable number.

117215873 is a deficient number, since it is larger than the sum of its proper divisors (1).

117215873 is an equidigital number, since it uses as much as digits as its factorization.

117215873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 35.

The square root of 117215873 is about 10826.6279607272. The cubic root of 117215873 is about 489.3979458399.

The spelling of 117215873 in words is "one hundred seventeen million, two hundred fifteen thousand, eight hundred seventy-three".