11331321023131 has 4 divisors (see below), whose sum is σ = 11607694706664. Its totient is φ = 11054947339600.

The previous prime is 11331321023063. The next prime is 11331321023147. The reversal of 11331321023131 is 13132012313311.

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-11331321023131 is a prime.

It is a super-2 number, since 2×11331321023131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331321023096 and 11331321023105.

It is not an unprimeable number, because it can be changed into a prime (11331321021131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138186841705 + ... + 138186841786.

It is an arithmetic number, because the mean of its divisors is an integer number (2901923676666).

Almost surely, 2^{11331321023131} is an apocalyptic number.

11331321023131 is a deficient number, since it is larger than the sum of its proper divisors (276373683533).

11331321023131 is an equidigital number, since it uses as much as digits as its factorization.

11331321023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276373683532.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 11331321023131 its reverse (13132012313311), we get a palindrome (24463333336442).

The spelling of 11331321023131 in words is "eleven trillion, three hundred thirty-one billion, three hundred twenty-one million, twenty-three thousand, one hundred thirty-one".