2131590 has 32 divisors (see below), whose sum is σ = 5243616. Its totient is φ = 554240.

The previous prime is 2131573. The next prime is 2131601. The reversal of 2131590 is 951312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364 + ... + 2096.

It is an arithmetic number, because the mean of its divisors is an integer number (163863).

2^2131590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2621808).

2131590 is an abundant number, since it is smaller than the sum of its proper divisors (3112026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131590 is a wasteful number, since it uses less digits than its factorization.

2131590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2131590 is about 1459.9965753384. The cubic root of 2131590 is about 128.6968423532.

The spelling of 2131590 in words is "two million, one hundred thirty-one thousand, five hundred ninety".