2131002205 has 8 divisors (see below), whose sum is σ = 2585935800. Its totient is φ = 1685646336.

The previous prime is 2131002199. The next prime is 2131002221. The reversal of 2131002205 is 5022001312.

It can be written as a sum of positive squares in 4 ways, for example, as 124947684 + 2006054521 = 11178^2 + 44789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131002205 - 2⁷ = 2131002077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393940 + ... + 2394829.

It is an arithmetic number, because the mean of its divisors is an integer number (323241975).

Almost surely, 2^2131002205 is an apocalyptic number.

It is an amenable number.

2131002205 is a deficient number, since it is larger than the sum of its proper divisors (454933595).

2131002205 is an equidigital number, since it uses as much as digits as its factorization.

2131002205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4788863.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2131002205 is about 46162.7794332187. The cubic root of 2131002205 is about 1286.8501169861.

Adding to 2131002205 its reverse (5022001312), we get a palindrome (7153003517).

The spelling of 2131002205 in words is "two billion, one hundred thirty-one million, two thousand, two hundred five".