11431434223 has 12 divisors (see below), whose sum is σ = 12998414520. Its totient is φ = 10033857680.

The previous prime is 11431434199. The next prime is 11431434247. The reversal of 11431434223 is 32243413411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11431434199) and next prime (11431434247).

It is not a de Polignac number, because 11431434223 - 2³³ = 2841499631 is a prime.

It is a super-2 number, since 2×11431434223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11431434191 and 11431434200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431431223) 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 in 11 ways as a sum of consecutive naturals, for example, 1625365 + ... + 1632382.

It is an arithmetic number, because the mean of its divisors is an integer number (1083201210).

Almost surely, 2^11431434223 is an apocalyptic number.

11431434223 is a deficient number, since it is larger than the sum of its proper divisors (1566980297).

11431434223 is a wasteful number, since it uses less digits than its factorization.

11431434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257798 (or 3257787 counting only the distinct ones).

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

Adding to 11431434223 its reverse (32243413411), we get a palindrome (43674847634).

The spelling of 11431434223 in words is "eleven billion, four hundred thirty-one million, four hundred thirty-four thousand, two hundred twenty-three".