2131666204 has 6 divisors (see below), whose sum is σ = 3730415864. Its totient is φ = 1065833100.

The previous prime is 2131666181. The next prime is 2131666213. The reversal of 2131666204 is 4026661312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266458272 + ... + 266458279.

Almost surely, 2^2131666204 is an apocalyptic number.

It is an amenable number.

2131666204 is a deficient number, since it is larger than the sum of its proper divisors (1598749660).

2131666204 is a wasteful number, since it uses less digits than its factorization.

2131666204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532916555 (or 532916553 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2131666204 is about 46169.9708035429. The cubic root of 2131666204 is about 1286.9837596537.

The spelling of 2131666204 in words is "two billion, one hundred thirty-one million, six hundred sixty-six thousand, two hundred four".