2170236213 has 8 divisors (see below), whose sum is σ = 3215164800. Its totient is φ = 1446824124.

The previous prime is 2170236191. The next prime is 2170236217. The reversal of 2170236213 is 3126320712.

2170236213 is a `hidden beast` number, since 2 + 17 + 0 + 23 + 621 + 3 = 666.

It is not a de Polignac number, because 2170236213 - 2⁵ = 2170236181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 80379119 = 2170236213 / (2 + 1 + 7 + 0 + 2 + 3 + 6 + 2 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170236217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40189533 + ... + 40189586.

It is an arithmetic number, because the mean of its divisors is an integer number (401895600).

Almost surely, 2^2170236213 is an apocalyptic number.

It is an amenable number.

2170236213 is a deficient number, since it is larger than the sum of its proper divisors (1044928587).

2170236213 is an equidigital number, since it uses as much as digits as its factorization.

2170236213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80379128 (or 80379122 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 2170236213 is about 46585.7941115100. The cubic root of 2170236213 is about 1294.6995646779.

Adding to 2170236213 its reverse (3126320712), we get a palindrome (5296556925).

The spelling of 2170236213 in words is "two billion, one hundred seventy million, two hundred thirty-six thousand, two hundred thirteen".