11311232331 has 24 divisors (see below), whose sum is σ = 17325349120. Its totient is φ = 6430288032.

The previous prime is 11311232329. The next prime is 11311232347. The reversal of 11311232331 is 13323211311.

It is a happy number.

11311232331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11311232331 - 2¹ = 11311232329 is a prime.

It is a super-2 number, since 2×11311232331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311232298 and 11311232307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311232351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 808050 + ... + 821928.

Almost surely, 2^11311232331 is an apocalyptic number.

11311232331 is a deficient number, since it is larger than the sum of its proper divisors (6014116789).

11311232331 is an equidigital number, since it uses as much as digits as its factorization.

11311232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14283 (or 14086 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 11311232331 its reverse (13323211311), we get a palindrome (24634443642).

The spelling of 11311232331 in words is "eleven billion, three hundred eleven million, two hundred thirty-two thousand, three hundred thirty-one".