117843811 has 2 divisors, whose sum is σ = 117843812. Its totient is φ = 117843810.

The previous prime is 117843793. The next prime is 117843823. The reversal of 117843811 is 118348711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117843811 - 2⁷ = 117843683 is a prime.

It is equal to p_6725851 and since 117843811 and 6725851 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (117843841) 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, 58921905 + 58921906.

It is an arithmetic number, because the mean of its divisors is an integer number (58921906).

Almost surely, 2^117843811 is an apocalyptic number.

117843811 is a deficient number, since it is larger than the sum of its proper divisors (1).

117843811 is an equidigital number, since it uses as much as digits as its factorization.

117843811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 34.

The square root of 117843811 is about 10855.5889292106. The cubic root of 117843811 is about 490.2703089988.

The spelling of 117843811 in words is "one hundred seventeen million, eight hundred forty-three thousand, eight hundred eleven".