231042269 has 2 divisors, whose sum is σ = 231042270. Its totient is φ = 231042268.

The previous prime is 231042233. The next prime is 231042277. The reversal of 231042269 is 962240132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135256900 + 95785369 = 11630^2 + 9787^2 .

It is a cyclic number.

It is not a de Polignac number, because 231042269 - 2⁸ = 231042013 is a prime.

It is a super-2 number, since 2×231042269² = 106761060129336722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231042169) 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, 115521134 + 115521135.

It is an arithmetic number, because the mean of its divisors is an integer number (115521135).

Almost surely, 2^231042269 is an apocalyptic number.

It is an amenable number.

231042269 is a deficient number, since it is larger than the sum of its proper divisors (1).

231042269 is an equidigital number, since it uses as much as digits as its factorization.

231042269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 231042269 is about 15200.0746379746. The cubic root of 231042269 is about 613.6166664760.

The spelling of 231042269 in words is "two hundred thirty-one million, forty-two thousand, two hundred sixty-nine".