117681143 has 2 divisors, whose sum is σ = 117681144. Its totient is φ = 117681142.

The previous prime is 117681131. The next prime is 117681167. The reversal of 117681143 is 341186711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117681143 - 2¹⁴ = 117664759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117681743) 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 as a sum of consecutive naturals, namely, 58840571 + 58840572.

It is an arithmetic number, because the mean of its divisors is an integer number (58840572).

Almost surely, 2^117681143 is an apocalyptic number.

117681143 is a deficient number, since it is larger than the sum of its proper divisors (1).

117681143 is an equidigital number, since it uses as much as digits as its factorization.

117681143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 117681143 is about 10848.0939800501. The cubic root of 117681143 is about 490.0446203987.

The spelling of 117681143 in words is "one hundred seventeen million, six hundred eighty-one thousand, one hundred forty-three".