671847231 has 16 divisors (see below), whose sum is σ = 979430400. Its totient is φ = 406264320.

The previous prime is 671847217. The next prime is 671847247. The reversal of 671847231 is 132748176.

671847231 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 671847231 - 2⁶ = 671847167 is a prime.

It is a super-2 number, since 2×671847231² = 902757403604734722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 671847231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671847271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7855 + ... + 37488.

It is an arithmetic number, because the mean of its divisors is an integer number (61214400).

Almost surely, 2^671847231 is an apocalyptic number.

671847231 is a deficient number, since it is larger than the sum of its proper divisors (307583169).

671847231 is a wasteful number, since it uses less digits than its factorization.

671847231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45806.

The product of its digits is 56448, while the sum is 39.

The square root of 671847231 is about 25920.0160300876. The cubic root of 671847231 is about 875.8374484671.

The spelling of 671847231 in words is "six hundred seventy-one million, eight hundred forty-seven thousand, two hundred thirty-one".