631432061671 has 2 divisors, whose sum is σ = 631432061672. Its totient is φ = 631432061670.

The previous prime is 631432061639. The next prime is 631432061747. The reversal of 631432061671 is 176160234136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631432061671 - 2⁵ = 631432061639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631432061621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315716030835 + 315716030836.

It is an arithmetic number, because the mean of its divisors is an integer number (315716030836).

Almost surely, 2^631432061671 is an apocalyptic number.

631432061671 is a deficient number, since it is larger than the sum of its proper divisors (1).

631432061671 is an equidigital number, since it uses as much as digits as its factorization.

631432061671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 631432061671 in words is "six hundred thirty-one billion, four hundred thirty-two million, sixty-one thousand, six hundred seventy-one".