11431434343 has 16 divisors (see below), whose sum is σ = 13460604736. Its totient is φ = 9505693440.

The previous prime is 11431434317. The next prime is 11431434347. The reversal of 11431434343 is 34343413411.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11431434343 is a prime.

It is a super-2 number, since 2×11431434343² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431434347) 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 in 15 ways as a sum of consecutive naturals, for example, 152196 + ... + 214537.

It is an arithmetic number, because the mean of its divisors is an integer number (841287796).

Almost surely, 2^11431434343 is an apocalyptic number.

11431434343 is a deficient number, since it is larger than the sum of its proper divisors (2029170393).

11431434343 is an equidigital number, since it uses as much as digits as its factorization.

11431434343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366874.

The product of its digits is 20736, while the sum is 31.

Adding to 11431434343 its reverse (34343413411), we get a palindrome (45774847754).

The spelling of 11431434343 in words is "eleven billion, four hundred thirty-one million, four hundred thirty-four thousand, three hundred forty-three".