11331033231 has 16 divisors (see below), whose sum is σ = 17823315968. Its totient is φ = 6266008800.

The previous prime is 11331033229. The next prime is 11331033251. The reversal of 11331033231 is 13233013311.

11331033231 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 11331033231 - 2¹ = 11331033229 is a prime.

It is a super-2 number, since 2×11331033231² (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 = 11331033198 and 11331033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331033251) 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 15 ways as a sum of consecutive naturals, for example, 8702140 + ... + 8703441.

It is an arithmetic number, because the mean of its divisors is an integer number (1113957248).

Almost surely, 2^11331033231 is an apocalyptic number.

11331033231 is a deficient number, since it is larger than the sum of its proper divisors (6492282737).

11331033231 is a wasteful number, since it uses less digits than its factorization.

11331033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17405622.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 11331033231 its reverse (13233013311), we get a palindrome (24564046542).

The spelling of 11331033231 in words is "eleven billion, three hundred thirty-one million, thirty-three thousand, two hundred thirty-one".