13231031311 has 16 divisors (see below), whose sum is σ = 14590080000. Its totient is φ = 11949196896.

The previous prime is 13231031287. The next prime is 13231031339. The reversal of 13231031311 is 11313013231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231031311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231038311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108451 + ... + 195508.

It is an arithmetic number, because the mean of its divisors is an integer number (911880000).

Almost surely, 2^13231031311 is an apocalyptic number.

13231031311 is a deficient number, since it is larger than the sum of its proper divisors (1359048689).

13231031311 is a wasteful number, since it uses less digits than its factorization.

13231031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304086.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13231031311 its reverse (11313013231), we get a palindrome (24544044542).

The spelling of 13231031311 in words is "thirteen billion, two hundred thirty-one million, thirty-one thousand, three hundred eleven".