671131 has 2 divisors, whose sum is σ = 671132. Its totient is φ = 671130.

The previous prime is 671123. The next prime is 671141. The reversal of 671131 is 131176.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671131 - 2³ = 671123 is a prime.

It is a super-2 number, since 2×671131² = 900833638322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 671099 and 671108.

It is not a weakly prime, because it can be changed into another prime (671141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335565 + 335566.

It is an arithmetic number, because the mean of its divisors is an integer number (335566).

2⁶⁷¹¹³¹ is an apocalyptic number.

671131 is a deficient number, since it is larger than the sum of its proper divisors (1).

671131 is an equidigital number, since it uses as much as digits as its factorization.

671131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126, while the sum is 19.

The square root of 671131 is about 819.2258540842. The cubic root of 671131 is about 87.5526105377.

The spelling of 671131 in words is "six hundred seventy-one thousand, one hundred thirty-one".