11043435231 has 12 divisors (see below), whose sum is σ = 15954649152. Its totient is φ = 7360896096.

The previous prime is 11043435223. The next prime is 11043435233. The reversal of 11043435231 is 13253434011.

It is a happy number.

11043435231 is a `hidden beast` number, since 1 + 104 + 34 + 3 + 523 + 1 = 666.

It is not a de Polignac number, because 11043435231 - 2³ = 11043435223 is a prime.

It is a super-2 number, since 2×11043435231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11043435195 and 11043435204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11043435233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64806 + ... + 162131.

It is an arithmetic number, because the mean of its divisors is an integer number (1329554096).

Almost surely, 2^11043435231 is an apocalyptic number.

11043435231 is a deficient number, since it is larger than the sum of its proper divisors (4911213921).

11043435231 is a wasteful number, since it uses less digits than its factorization.

11043435231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232350 (or 232347 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 11043435231 its reverse (13253434011), we get a palindrome (24296869242).

The spelling of 11043435231 in words is "eleven billion, forty-three million, four hundred thirty-five thousand, two hundred thirty-one".