2173131 has 12 divisors (see below), whose sum is σ = 3240640. Its totient is φ = 1401840.

The previous prime is 2173111. The next prime is 2173141. The reversal of 2173131 is 1313712.

It is not a de Polignac number, because 2173131 - 2⁵ = 2173099 is a prime.

It is a super-2 number, since 2×2173131² = 9444996686322, which contains 22 as substring.

It is a Duffinian number.

2173131 is a modest number, since divided by 3131 gives 217 as remainder.

2173131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2173111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3616 + ... + 4173.

2^2173131 is an apocalyptic number.

2173131 is a deficient number, since it is larger than the sum of its proper divisors (1067509).

2173131 is a wasteful number, since it uses less digits than its factorization.

2173131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826 (or 7823 counting only the distinct ones).

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

The square root of 2173131 is about 1474.1543338470. The cubic root of 2173131 is about 129.5274957393.

Adding to 2173131 its reverse (1313712), we get a palindrome (3486843).

It can be divided in two parts, 2173 and 131, that added together give a square (2304 = 48²).

The spelling of 2173131 in words is "two million, one hundred seventy-three thousand, one hundred thirty-one".