13311322031 has 16 divisors (see below), whose sum is σ = 16500697920. Its totient is φ = 10476625920.

The previous prime is 13311322027. The next prime is 13311322051. The reversal of 13311322031 is 13022311331.

It is a cyclic number.

It is not a de Polignac number, because 13311322031 - 2² = 13311322027 is a prime.

It is a super-2 number, since 2×13311322031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13311321994 and 13311322012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311322001) 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, 1359266 + ... + 1369023.

It is an arithmetic number, because the mean of its divisors is an integer number (1031293620).

Almost surely, 2^13311322031 is an apocalyptic number.

13311322031 is a deficient number, since it is larger than the sum of its proper divisors (3189375889).

13311322031 is a wasteful number, since it uses less digits than its factorization.

13311322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728354.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13311322031 its reverse (13022311331), we get a palindrome (26333633362).

The spelling of 13311322031 in words is "thirteen billion, three hundred eleven million, three hundred twenty-two thousand, thirty-one".