13331331231 has 16 divisors (see below), whose sum is σ = 18824780544. Its totient is φ = 8374253184.

The previous prime is 13331331173. The next prime is 13331331241. The reversal of 13331331231 is 13213313331.

It is not a de Polignac number, because 13331331231 - 2¹¹ = 13331329183 is a prime.

It is a super-2 number, since 2×13331331231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331331241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437226 + ... + 1446471.

It is an arithmetic number, because the mean of its divisors is an integer number (1176548784).

Almost surely, 2^13331331231 is an apocalyptic number.

13331331231 is a deficient number, since it is larger than the sum of its proper divisors (5493449313).

13331331231 is a wasteful number, since it uses less digits than its factorization.

13331331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883790.

The product of its digits is 1458, while the sum is 24.

Adding to 13331331231 its reverse (13213313331), we get a palindrome (26544644562).

The spelling of 13331331231 in words is "thirteen billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-one".