431655671 has 2 divisors, whose sum is σ = 431655672. Its totient is φ = 431655670.

The previous prime is 431655617. The next prime is 431655673. The reversal of 431655671 is 176556134.

Together with previous prime (431655617) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431655671 - 2¹⁸ = 431393527 is a prime.

Together with 431655673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431655673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215827835 + 215827836.

It is an arithmetic number, because the mean of its divisors is an integer number (215827836).

Almost surely, 2^431655671 is an apocalyptic number.

431655671 is a deficient number, since it is larger than the sum of its proper divisors (1).

431655671 is an equidigital number, since it uses as much as digits as its factorization.

431655671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 431655671 is about 20776.3247712390. The cubic root of 431655671 is about 755.7517305535.

The spelling of 431655671 in words is "four hundred thirty-one million, six hundred fifty-five thousand, six hundred seventy-one".