31143112967 has 2 divisors, whose sum is σ = 31143112968. Its totient is φ = 31143112966.

The previous prime is 31143112951. The next prime is 31143113003. The reversal of 31143112967 is 76921134113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31143112967 - 2⁴ = 31143112951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31143112967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143112907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571556483 + 15571556484.

It is an arithmetic number, because the mean of its divisors is an integer number (15571556484).

Almost surely, 2^31143112967 is an apocalyptic number.

31143112967 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143112967 is an equidigital number, since it uses as much as digits as its factorization.

31143112967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The spelling of 31143112967 in words is "thirty-one billion, one hundred forty-three million, one hundred twelve thousand, nine hundred sixty-seven".