11331312222231 has 8 divisors (see below), whose sum is σ = 16787129218160. Its totient is φ = 7554208148136.

The previous prime is 11331312222229. The next prime is 11331312222247. The reversal of 11331312222231 is 13222221313311.

11331312222231 is a `hidden beast` number, since 1 + 1 + 3 + 313 + 122 + 2 + 223 + 1 = 666.

It is not a de Polignac number, because 11331312222231 - 2¹ = 11331312222229 is a prime.

It is a super-2 number, since 2×11331312222231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 419678230453 = 11331312222231 / (1 + 1 + 3 + 3 + 1 + 3 + 1 + 2 + 2 + 2 + 2 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331312222195 and 11331312222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331312222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209839115200 + ... + 209839115253.

It is an arithmetic number, because the mean of its divisors is an integer number (2098391152270).

Almost surely, 2^{11331312222231} is an apocalyptic number.

11331312222231 is a deficient number, since it is larger than the sum of its proper divisors (5455816995929).

11331312222231 is an equidigital number, since it uses as much as digits as its factorization.

11331312222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419678230462 (or 419678230456 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 11331312222231 its reverse (13222221313311), we get a palindrome (24553533535542).

The spelling of 11331312222231 in words is "eleven trillion, three hundred thirty-one billion, three hundred twelve million, two hundred twenty-two thousand, two hundred thirty-one".