1671331 has 6 divisors (see below), whose sum is σ = 1698332. Its totient is φ = 1644720.

The previous prime is 1671311. The next prime is 1671337. The reversal of 1671331 is 1331761.

It is not a de Polignac number, because 1671331 - 2⁹ = 1670819 is a prime.

It is a super-2 number, since 2×1671331² = 5586694623122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7816 + ... + 8026.

2^1671331 is an apocalyptic number.

1671331 is a deficient number, since it is larger than the sum of its proper divisors (27001).

1671331 is an frugal number, since it uses more digits than its factorization.

1671331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 300 counting only the distinct ones).

The product of its digits is 378, while the sum is 22.

The square root of 1671331 is about 1292.7996751237. The cubic root of 1671331 is about 118.6736107048.

It can be divided in two parts, 1671 and 331, that added together give a palindrome (2002).

The spelling of 1671331 in words is "one million, six hundred seventy-one thousand, three hundred thirty-one".