11321231031 has 32 divisors (see below), whose sum is σ = 18887178240. Its totient is φ = 6640012800.

The previous prime is 11321231023. The next prime is 11321231057. The reversal of 11321231031 is 13013212311.

11321231031 is a `hidden beast` number, since 1 + 1 + 321 + 2 + 310 + 31 = 666.

11321231031 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 11321231031 - 2³ = 11321231023 is a prime.

It is a super-2 number, since 2×11321231031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11321230995 and 11321231013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321231021) 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 31 ways as a sum of consecutive naturals, for example, 605610 + ... + 624023.

It is an arithmetic number, because the mean of its divisors is an integer number (590224320).

Almost surely, 2^11321231031 is an apocalyptic number.

11321231031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11321231031 is a deficient number, since it is larger than the sum of its proper divisors (7565947209).

11321231031 is a wasteful number, since it uses less digits than its factorization.

11321231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229684 (or 1229678 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11321231031 its reverse (13013212311), we get a palindrome (24334443342).

The spelling of 11321231031 in words is "eleven billion, three hundred twenty-one million, two hundred thirty-one thousand, thirty-one".