11011431023203 has 24 divisors (see below), whose sum is σ = 12643660718208. Its totient is φ = 9552359711232.

The previous prime is 11011431023113. The next prime is 11011431023231. The reversal of 11011431023203 is 30232013411011.

It is a de Polignac number, because none of the positive numbers 2^k-11011431023203 is a prime.

It is a super-2 number, since 2×11011431023203² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11011431023603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 885651 + ... + 4775692.

It is an arithmetic number, because the mean of its divisors is an integer number (526819196592).

Almost surely, 2^{11011431023203} is an apocalyptic number.

11011431023203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11011431023203 is a deficient number, since it is larger than the sum of its proper divisors (1632229695005).

11011431023203 is a wasteful number, since it uses less digits than its factorization.

11011431023203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662063 (or 5662050 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11011431023203 its reverse (30232013411011), we get a palindrome (41243444434214).

The spelling of 11011431023203 in words is "eleven trillion, eleven billion, four hundred thirty-one million, twenty-three thousand, two hundred three".