31662132071 has 2 divisors, whose sum is σ = 31662132072. Its totient is φ = 31662132070.

The previous prime is 31662132041. The next prime is 31662132191. The reversal of 31662132071 is 17023126613.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31662132071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31662132041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15831066035 + 15831066036.

It is an arithmetic number, because the mean of its divisors is an integer number (15831066036).

Almost surely, 2^31662132071 is an apocalyptic number.

31662132071 is a deficient number, since it is larger than the sum of its proper divisors (1).

31662132071 is an equidigital number, since it uses as much as digits as its factorization.

31662132071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

Adding to 31662132071 its reverse (17023126613), we get a palindrome (48685258684).

The spelling of 31662132071 in words is "thirty-one billion, six hundred sixty-two million, one hundred thirty-two thousand, seventy-one".