31142332163 has 2 divisors, whose sum is σ = 31142332164. Its totient is φ = 31142332162.

The previous prime is 31142332159. The next prime is 31142332171. The reversal of 31142332163 is 36123324113.

It is a weak prime.

It is an emirp because it is prime and its reverse (36123324113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31142332163 - 2² = 31142332159 is a prime.

It is not a weakly prime, because it can be changed into another prime (31142332183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571166081 + 15571166082.

It is an arithmetic number, because the mean of its divisors is an integer number (15571166082).

Almost surely, 2^31142332163 is an apocalyptic number.

31142332163 is a deficient number, since it is larger than the sum of its proper divisors (1).

31142332163 is an equidigital number, since it uses as much as digits as its factorization.

31142332163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

Adding to 31142332163 its reverse (36123324113), we get a palindrome (67265656276).

The spelling of 31142332163 in words is "thirty-one billion, one hundred forty-two million, three hundred thirty-two thousand, one hundred sixty-three".