671031 has 16 divisors (see below), whose sum is σ = 1029600. Its totient is φ = 431424.

The previous prime is 671029. The next prime is 671039. The reversal of 671031 is 130176.

It is not a de Polignac number, because 671031 - 2¹ = 671029 is a prime.

It is a super-2 number, since 2×671031² = 900565205922, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 670995 and 671013.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671031.

It is not an unprimeable number, because it can be changed into a prime (671039) 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, 355 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (64350).

2⁶⁷¹⁰³¹ is an apocalyptic number.

671031 is a deficient number, since it is larger than the sum of its proper divisors (358569).

671031 is a wasteful number, since it uses less digits than its factorization.

671031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 671031 is about 819.1648185805. The cubic root of 671031 is about 87.5482618110.

The spelling of 671031 in words is "six hundred seventy-one thousand, thirty-one".