242431117 has 2 divisors, whose sum is σ = 242431118. Its totient is φ = 242431116.

The previous prime is 242431099. The next prime is 242431121. The reversal of 242431117 is 711134242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170198116 + 72233001 = 13046^2 + 8499^2 .

It is a cyclic number.

It is not a de Polignac number, because 242431117 - 2⁷ = 242430989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242431091 and 242431100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242431187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121215558 + 121215559.

It is an arithmetic number, because the mean of its divisors is an integer number (121215559).

Almost surely, 2^242431117 is an apocalyptic number.

It is an amenable number.

242431117 is a deficient number, since it is larger than the sum of its proper divisors (1).

242431117 is an equidigital number, since it uses as much as digits as its factorization.

242431117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 242431117 is about 15570.1996454766. The cubic root of 242431117 is about 623.5378016694.

Adding to 242431117 its reverse (711134242), we get a palindrome (953565359).

The spelling of 242431117 in words is "two hundred forty-two million, four hundred thirty-one thousand, one hundred seventeen".