671231 has 8 divisors (see below), whose sum is σ = 739200. Its totient is φ = 604440.

The previous prime is 671219. The next prime is 671233. The reversal of 671231 is 132176.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671231 is a prime.

It is a super-2 number, since 2×671231² = 901102110722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 1748.

It is an arithmetic number, because the mean of its divisors is an integer number (92400).

2⁶⁷¹²³¹ is an apocalyptic number.

671231 is a deficient number, since it is larger than the sum of its proper divisors (67969).

671231 is a wasteful number, since it uses less digits than its factorization.

671231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its digits is 252, while the sum is 20.

The square root of 671231 is about 819.2868850409. The cubic root of 671231 is about 87.5569588325.

The spelling of 671231 in words is "six hundred seventy-one thousand, two hundred thirty-one".