12340230437 has 2 divisors, whose sum is σ = 12340230438. Its totient is φ = 12340230436.

The previous prime is 12340230433. The next prime is 12340230443. The reversal of 12340230437 is 73403204321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8224494721 + 4115735716 = 90689^2 + 64154^2 .

It is a cyclic number.

It is not a de Polignac number, because 12340230437 - 2² = 12340230433 is a prime.

It is a super-2 number, since 2×12340230437² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12340230433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170115218 + 6170115219.

It is an arithmetic number, because the mean of its divisors is an integer number (6170115219).

Almost surely, 2^12340230437 is an apocalyptic number.

It is an amenable number.

12340230437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340230437 is an equidigital number, since it uses as much as digits as its factorization.

12340230437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 29.

Adding to 12340230437 its reverse (73403204321), we get a palindrome (85743434758).

The spelling of 12340230437 in words is "twelve billion, three hundred forty million, two hundred thirty thousand, four hundred thirty-seven".