241117991 has 2 divisors, whose sum is σ = 241117992. Its totient is φ = 241117990.

The previous prime is 241117967. The next prime is 241118023. The reversal of 241117991 is 199711142.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241117991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241117091) 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, 120558995 + 120558996.

It is an arithmetic number, because the mean of its divisors is an integer number (120558996).

Almost surely, 2^241117991 is an apocalyptic number.

241117991 is a deficient number, since it is larger than the sum of its proper divisors (1).

241117991 is an equidigital number, since it uses as much as digits as its factorization.

241117991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 35.

The square root of 241117991 is about 15527.9744654607. The cubic root of 241117991 is about 622.4099672482.

It can be divided in two parts, 2411 and 17991, that added together give a palindrome (20402).

The spelling of 241117991 in words is "two hundred forty-one million, one hundred seventeen thousand, nine hundred ninety-one".