671208831 has 12 divisors (see below), whose sum is σ = 970147360. Its totient is φ = 447184800.

The previous prime is 671208829. The next prime is 671208871. The reversal of 671208831 is 138802176.

671208831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671208831 - 2¹ = 671208829 is a prime.

It is a super-2 number, since 2×671208831² = 901042589624773122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671208821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8695 + ... + 37656.

Almost surely, 2^671208831 is an apocalyptic number.

671208831 is a deficient number, since it is larger than the sum of its proper divisors (298938529).

671208831 is a wasteful number, since it uses less digits than its factorization.

671208831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47966 (or 47963 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 671208831 is about 25907.6982960664. The cubic root of 671208831 is about 875.5599489630.

The spelling of 671208831 in words is "six hundred seventy-one million, two hundred eight thousand, eight hundred thirty-one".