985671431 has 2 divisors, whose sum is σ = 985671432. Its totient is φ = 985671430.

The previous prime is 985671403. The next prime is 985671461. The reversal of 985671431 is 134176589.

It is a weak prime.

It is an emirp because it is prime and its reverse (134176589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985671431 - 2²² = 981477127 is a prime.

It is a super-2 number, since 2×985671431² = 1943096339779175522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985671461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492835715 + 492835716.

It is an arithmetic number, because the mean of its divisors is an integer number (492835716).

Almost surely, 2^985671431 is an apocalyptic number.

985671431 is a deficient number, since it is larger than the sum of its proper divisors (1).

985671431 is an equidigital number, since it uses as much as digits as its factorization.

985671431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 985671431 is about 31395.4046159625. The cubic root of 985671431 is about 995.2008150019.

The spelling of 985671431 in words is "nine hundred eighty-five million, six hundred seventy-one thousand, four hundred thirty-one".