31628801671 has 2 divisors, whose sum is σ = 31628801672. Its totient is φ = 31628801670.

The previous prime is 31628801663. The next prime is 31628801717. The reversal of 31628801671 is 17610882613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31628801671 - 2³ = 31628801663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31628801621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15814400835 + 15814400836.

It is an arithmetic number, because the mean of its divisors is an integer number (15814400836).

Almost surely, 2^31628801671 is an apocalyptic number.

31628801671 is a deficient number, since it is larger than the sum of its proper divisors (1).

31628801671 is an equidigital number, since it uses as much as digits as its factorization.

31628801671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 31628801671 in words is "thirty-one billion, six hundred twenty-eight million, eight hundred one thousand, six hundred seventy-one".