671747031 has 12 divisors (see below), whose sum is σ = 977385552. Its totient is φ = 444561696.

The previous prime is 671747017. The next prime is 671747051. The reversal of 671747031 is 130747176.

It is not a de Polignac number, because 671747031 - 2⁹ = 671746519 is a prime.

It is a super-2 number, since 2×671747031² = 902488147314629922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671747051) 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 in 11 ways as a sum of consecutive naturals, for example, 271171 + ... + 273636.

It is an arithmetic number, because the mean of its divisors is an integer number (81448796).

Almost surely, 2^671747031 is an apocalyptic number.

671747031 is a deficient number, since it is larger than the sum of its proper divisors (305638521).

671747031 is a wasteful number, since it uses less digits than its factorization.

671747031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544950 (or 544947 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 671747031 is about 25918.0830888397. The cubic root of 671747031 is about 875.7939051974.

The spelling of 671747031 in words is "six hundred seventy-one million, seven hundred forty-seven thousand, thirty-one".