11203443231 has 16 divisors (see below), whose sum is σ = 15350110944. Its totient is φ = 7263091584.

The previous prime is 11203443217. The next prime is 11203443287. The reversal of 11203443231 is 13234430211.

It is a happy number.

It is not a de Polignac number, because 11203443231 - 2²³ = 11195054623 is a prime.

It is a super-2 number, since 2×11203443231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203443211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181461 + ... + 235233.

It is an arithmetic number, because the mean of its divisors is an integer number (959381934).

Almost surely, 2^11203443231 is an apocalyptic number.

11203443231 is a deficient number, since it is larger than the sum of its proper divisors (4146667713).

11203443231 is a wasteful number, since it uses less digits than its factorization.

11203443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55690.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 11203443231 its reverse (13234430211), we get a palindrome (24437873442).

The spelling of 11203443231 in words is "eleven billion, two hundred three million, four hundred forty-three thousand, two hundred thirty-one".