31143112159 has 2 divisors, whose sum is σ = 31143112160. Its totient is φ = 31143112158.

The previous prime is 31143112057. The next prime is 31143112199. The reversal of 31143112159 is 95121134113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31143112159 - 2⁹ = 31143111647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31143112159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143112199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571556079 + 15571556080.

It is an arithmetic number, because the mean of its divisors is an integer number (15571556080).

Almost surely, 2^31143112159 is an apocalyptic number.

31143112159 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143112159 is an equidigital number, since it uses as much as digits as its factorization.

31143112159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 31.

The spelling of 31143112159 in words is "thirty-one billion, one hundred forty-three million, one hundred twelve thousand, one hundred fifty-nine".