31113223123163 has 2 divisors, whose sum is σ = 31113223123164. Its totient is φ = 31113223123162.

The previous prime is 31113223123159. The next prime is 31113223123219. The reversal of 31113223123163 is 36132132231113.

It is a weak prime.

It is an emirp because it is prime and its reverse (36132132231113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31113223123163 - 2² = 31113223123159 is a prime.

It is a super-2 number, since 2×31113223123163² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31113223123153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556611561581 + 15556611561582.

It is an arithmetic number, because the mean of its divisors is an integer number (15556611561582).

Almost surely, 2^{31113223123163} is an apocalyptic number.

31113223123163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113223123163 is an equidigital number, since it uses as much as digits as its factorization.

31113223123163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

Adding to 31113223123163 its reverse (36132132231113), we get a palindrome (67245355354276).

The spelling of 31113223123163 in words is "thirty-one trillion, one hundred thirteen billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred sixty-three".