117321797 has 2 divisors, whose sum is σ = 117321798. Its totient is φ = 117321796.

The previous prime is 117321779. The next prime is 117321803. The reversal of 117321797 is 797123711.

Together with previous prime (117321779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117310561 + 11236 = 10831^2 + 106^2 .

It is an emirp because it is prime and its reverse (797123711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117321797 - 2¹⁶ = 117256261 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117321797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117351797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58660898 + 58660899.

It is an arithmetic number, because the mean of its divisors is an integer number (58660899).

Almost surely, 2^117321797 is an apocalyptic number.

It is an amenable number.

117321797 is a deficient number, since it is larger than the sum of its proper divisors (1).

117321797 is an equidigital number, since it uses as much as digits as its factorization.

117321797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 38.

The square root of 117321797 is about 10831.5186839150. The cubic root of 117321797 is about 489.5453188861.

The spelling of 117321797 in words is "one hundred seventeen million, three hundred twenty-one thousand, seven hundred ninety-seven".