13112211031 has 2 divisors, whose sum is σ = 13112211032. Its totient is φ = 13112211030.

The previous prime is 13112210989. The next prime is 13112211037. The reversal of 13112211031 is 13011221131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13112211031 - 2⁹ = 13112210519 is a prime.

It is a super-2 number, since 2×13112211031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13112210996 and 13112211014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13112211037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6556105515 + 6556105516.

It is an arithmetic number, because the mean of its divisors is an integer number (6556105516).

Almost surely, 2^13112211031 is an apocalyptic number.

13112211031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13112211031 is an equidigital number, since it uses as much as digits as its factorization.

13112211031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13112211031 its reverse (13011221131), we get a palindrome (26123432162).

The spelling of 13112211031 in words is "thirteen billion, one hundred twelve million, two hundred eleven thousand, thirty-one".