242231131 has 2 divisors, whose sum is σ = 242231132. Its totient is φ = 242231130.

The previous prime is 242231047. The next prime is 242231141. The reversal of 242231131 is 131132242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242231131 - 2⁹ = 242230619 is a prime.

It is a super-2 number, since 2×242231131² = 117351841651078322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242231099 and 242231108.

It is not a weakly prime, because it can be changed into another prime (242231141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121115565 + 121115566.

It is an arithmetic number, because the mean of its divisors is an integer number (121115566).

Almost surely, 2^242231131 is an apocalyptic number.

242231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

242231131 is an equidigital number, since it uses as much as digits as its factorization.

242231131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 242231131 is about 15563.7762448578. The cubic root of 242231131 is about 623.3662984717.

Adding to 242231131 its reverse (131132242), we get a palindrome (373363373).

The spelling of 242231131 in words is "two hundred forty-two million, two hundred thirty-one thousand, one hundred thirty-one".