2131204 has 6 divisors (see below), whose sum is σ = 3729614. Its totient is φ = 1065600.

The previous prime is 2131193. The next prime is 2131223. The reversal of 2131204 is 4021312.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 492804 = 1280^2 + 702^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266397 + ... + 266404.

2^2131204 is an apocalyptic number.

It is an amenable number.

2131204 is a deficient number, since it is larger than the sum of its proper divisors (1598410).

2131204 is a wasteful number, since it uses less digits than its factorization.

2131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532805 (or 532803 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2131204 is about 1459.8643772625. The cubic root of 2131204 is about 128.6890735077.

Adding to 2131204 its reverse (4021312), we get a palindrome (6152516).

The spelling of 2131204 in words is "two million, one hundred thirty-one thousand, two hundred four".