12434311243 has 2 divisors, whose sum is σ = 12434311244. Its totient is φ = 12434311242.

The previous prime is 12434311223. The next prime is 12434311261. The reversal of 12434311243 is 34211343421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34211343421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12434311243 - 2¹³ = 12434303051 is a prime.

It is a super-2 number, since 2×12434311243² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12434311223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217155621 + 6217155622.

It is an arithmetic number, because the mean of its divisors is an integer number (6217155622).

Almost surely, 2^12434311243 is an apocalyptic number.

12434311243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434311243 is an equidigital number, since it uses as much as digits as its factorization.

12434311243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

Adding to 12434311243 its reverse (34211343421), we get a palindrome (46645654664).

The spelling of 12434311243 in words is "twelve billion, four hundred thirty-four million, three hundred eleven thousand, two hundred forty-three".