2231243242237 has 2 divisors, whose sum is σ = 2231243242238. Its totient is φ = 2231243242236.

The previous prime is 2231243242219. The next prime is 2231243242357. The reversal of 2231243242237 is 7322423421322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1929170990916 + 302072251321 = 1388946^2 + 549611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231243242237 is a prime.

It is a super-3 number, since 3×2231243242237³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231243242196 and 2231243242205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231243242537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115621621118 + 1115621621119.

It is an arithmetic number, because the mean of its divisors is an integer number (1115621621119).

Almost surely, 2^{2231243242237} is an apocalyptic number.

It is an amenable number.

2231243242237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231243242237 is an equidigital number, since it uses as much as digits as its factorization.

2231243242237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 37.

Adding to 2231243242237 its reverse (7322423421322), we get a palindrome (9553666663559).

The spelling of 2231243242237 in words is "two trillion, two hundred thirty-one billion, two hundred forty-three million, two hundred forty-two thousand, two hundred thirty-seven".