13331333231311 has 4 divisors (see below), whose sum is σ = 13334540195592. Its totient is φ = 13328126267032.

The previous prime is 13331333231269. The next prime is 13331333231339. The reversal of 13331333231311 is 11313233313331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13331333231311 - 2¹³ = 13331333223119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331333234311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1603475905 + ... + 1603484218.

It is an arithmetic number, because the mean of its divisors is an integer number (3333635048898).

Almost surely, 2^{13331333231311} is an apocalyptic number.

13331333231311 is a deficient number, since it is larger than the sum of its proper divisors (3206964281).

13331333231311 is an equidigital number, since it uses as much as digits as its factorization.

13331333231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206964280.

The product of its digits is 13122, while the sum is 31.

Adding to 13331333231311 its reverse (11313233313331), we get a palindrome (24644566544642).

The spelling of 13331333231311 in words is "thirteen trillion, three hundred thirty-one billion, three hundred thirty-three million, two hundred thirty-one thousand, three hundred eleven".