2131185 has 16 divisors (see below), whose sum is σ = 3897216. Its totient is φ = 974208.

The previous prime is 2131141. The next prime is 2131193. The reversal of 2131185 is 5811312.

It is not a de Polignac number, because 2131185 - 2⁸ = 2130929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10044 + ... + 10253.

It is an arithmetic number, because the mean of its divisors is an integer number (243576).

2^2131185 is an apocalyptic number.

It is an amenable number.

2131185 is a deficient number, since it is larger than the sum of its proper divisors (1766031).

2131185 is a wasteful number, since it uses less digits than its factorization.

2131185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20312.

The product of its digits is 240, while the sum is 21.

The square root of 2131185 is about 1459.8578697942. The cubic root of 2131185 is about 128.6886910792.

Adding to 2131185 its reverse (5811312), we get a palindrome (7942497).

It can be divided in two parts, 213 and 1185, that multiplied together give a triangular number (252405 = T₇₁₀).

The spelling of 2131185 in words is "two million, one hundred thirty-one thousand, one hundred eighty-five".