11231312333203 has 4 divisors (see below), whose sum is σ = 11231325064368. Its totient is φ = 11231299602040.

The previous prime is 11231312333183. The next prime is 11231312333209. The reversal of 11231312333203 is 30233321313211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11231312333203 is a prime.

It is a super-2 number, since 2×11231312333203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231312333209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4935151 + ... + 6842392.

It is an arithmetic number, because the mean of its divisors is an integer number (2807831266092).

Almost surely, 2^{11231312333203} is an apocalyptic number.

11231312333203 is a deficient number, since it is larger than the sum of its proper divisors (12731165).

11231312333203 is an equidigital number, since it uses as much as digits as its factorization.

11231312333203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731164.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 11231312333203 its reverse (30233321313211), we get a palindrome (41464633646414).

The spelling of 11231312333203 in words is "eleven trillion, two hundred thirty-one billion, three hundred twelve million, three hundred thirty-three thousand, two hundred three".