13131112223 has 2 divisors, whose sum is σ = 13131112224. Its totient is φ = 13131112222.

The previous prime is 13131112207. The next prime is 13131112231. The reversal of 13131112223 is 32221113131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13131112223 - 2⁴ = 13131112207 is a prime.

It is a super-2 number, since 2×13131112223² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 13131112195 and 13131112204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13131112283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565556111 + 6565556112.

It is an arithmetic number, because the mean of its divisors is an integer number (6565556112).

Almost surely, 2^13131112223 is an apocalyptic number.

13131112223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131112223 is an equidigital number, since it uses as much as digits as its factorization.

13131112223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

Adding to 13131112223 its reverse (32221113131), we get a palindrome (45352225354).

The spelling of 13131112223 in words is "thirteen billion, one hundred thirty-one million, one hundred twelve thousand, two hundred twenty-three".