231042113 has 2 divisors, whose sum is σ = 231042114. Its totient is φ = 231042112.

The previous prime is 231042103. The next prime is 231042127. The reversal of 231042113 is 311240132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165302449 + 65739664 = 12857^2 + 8108^2 .

It is a cyclic number.

It is not a de Polignac number, because 231042113 - 2⁸ = 231041857 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231042091 and 231042100.

It is not a weakly prime, because it can be changed into another prime (231042103) 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, 115521056 + 115521057.

It is an arithmetic number, because the mean of its divisors is an integer number (115521057).

Almost surely, 2^231042113 is an apocalyptic number.

It is an amenable number.

231042113 is a deficient number, since it is larger than the sum of its proper divisors (1).

231042113 is an equidigital number, since it uses as much as digits as its factorization.

231042113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231042113 is about 15200.0695064200. The cubic root of 231042113 is about 613.6165283711.

Adding to 231042113 its reverse (311240132), we get a palindrome (542282245).

The spelling of 231042113 in words is "two hundred thirty-one million, forty-two thousand, one hundred thirteen".