31711061867 has 2 divisors, whose sum is σ = 31711061868. Its totient is φ = 31711061866.

The previous prime is 31711061761. The next prime is 31711061873. The reversal of 31711061867 is 76816011713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31711061867 is a prime.

It is not a weakly prime, because it can be changed into another prime (31711061267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15855530933 + 15855530934.

It is an arithmetic number, because the mean of its divisors is an integer number (15855530934).

Almost surely, 2^31711061867 is an apocalyptic number.

31711061867 is a deficient number, since it is larger than the sum of its proper divisors (1).

31711061867 is an equidigital number, since it uses as much as digits as its factorization.

31711061867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 31711061867 in words is "thirty-one billion, seven hundred eleven million, sixty-one thousand, eight hundred sixty-seven".