11312003443 has 32 divisors (see below), whose sum is σ = 12702493440. Its totient is φ = 10006364160.

The previous prime is 11312003441. The next prime is 11312003449. The reversal of 11312003443 is 34430021311.

It is not a de Polignac number, because 11312003443 - 2¹ = 11312003441 is a prime.

It is a super-2 number, since 2×11312003443² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11312003441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9810355 + ... + 9811507.

It is an arithmetic number, because the mean of its divisors is an integer number (396952920).

Almost surely, 2^11312003443 is an apocalyptic number.

11312003443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11312003443 is a deficient number, since it is larger than the sum of its proper divisors (1390489997).

11312003443 is a wasteful number, since it uses less digits than its factorization.

11312003443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 11312003443 its reverse (34430021311), we get a palindrome (45742024754).

The spelling of 11312003443 in words is "eleven billion, three hundred twelve million, three thousand, four hundred forty-three".