2131582 has 4 divisors (see below), whose sum is σ = 3197376. Its totient is φ = 1065790.

The previous prime is 2131573. The next prime is 2131601. The reversal of 2131582 is 2851312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532894 + ... + 532897.

It is an arithmetic number, because the mean of its divisors is an integer number (799344).

2^2131582 is an apocalyptic number.

2131582 is a deficient number, since it is larger than the sum of its proper divisors (1065794).

2131582 is a wasteful number, since it uses less digits than its factorization.

2131582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065793.

The product of its digits is 480, while the sum is 22.

The square root of 2131582 is about 1459.9938356034. The cubic root of 2131582 is about 128.6966813503.

Adding to 2131582 its reverse (2851312), we get a palindrome (4982894).

The spelling of 2131582 in words is "two million, one hundred thirty-one thousand, five hundred eighty-two".