13111223320031 has 8 divisors (see below), whose sum is σ = 13135520853840. Its totient is φ = 13086932459328.

The previous prime is 13111223320009. The next prime is 13111223320049. The reversal of 13111223320031 is 13002332211131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111223320031 is a prime.

It is a super-2 number, since 2×13111223320031² (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 = 13111223319979 and 13111223320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111223320061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273555 + ... + 5602811.

It is an arithmetic number, because the mean of its divisors is an integer number (1641940106730).

Almost surely, 2^{13111223320031} is an apocalyptic number.

13111223320031 is a deficient number, since it is larger than the sum of its proper divisors (24297533809).

13111223320031 is an equidigital number, since it uses as much as digits as its factorization.

13111223320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336553.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13111223320031 its reverse (13002332211131), we get a palindrome (26113555531162).

The spelling of 13111223320031 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty-three million, three hundred twenty thousand, thirty-one".