671217031 has 8 divisors (see below), whose sum is σ = 682413984. Its totient is φ = 660068640.

The previous prime is 671217023. The next prime is 671217089. The reversal of 671217031 is 130712176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671217031 - 2³ = 671217023 is a prime.

It is a super-2 number, since 2×671217031² = 901064605408909922, 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 (671215031) 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 7 ways as a sum of consecutive naturals, for example, 16281 + ... + 40093.

It is an arithmetic number, because the mean of its divisors is an integer number (85301748).

Almost surely, 2^671217031 is an apocalyptic number.

671217031 is a deficient number, since it is larger than the sum of its proper divisors (11196953).

671217031 is a wasteful number, since it uses less digits than its factorization.

671217031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24281.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 671217031 is about 25907.8565497032. The cubic root of 671217031 is about 875.5635144517.

The spelling of 671217031 in words is "six hundred seventy-one million, two hundred seventeen thousand, thirty-one".