213130244311 has 4 divisors (see below), whose sum is σ = 213134684832. Its totient is φ = 213125803792.

The previous prime is 213130244309. The next prime is 213130244333. The reversal of 213130244311 is 113442031312.

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

It is a cyclic number.

It is not a de Polignac number, because 213130244311 - 2¹ = 213130244309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213130244381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2147470 + ... + 2244523.

It is an arithmetic number, because the mean of its divisors is an integer number (53283671208).

Almost surely, 2^213130244311 is an apocalyptic number.

213130244311 is a deficient number, since it is larger than the sum of its proper divisors (4440521).

213130244311 is an equidigital number, since it uses as much as digits as its factorization.

213130244311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440520.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 213130244311 its reverse (113442031312), we get a palindrome (326572275623).

The spelling of 213130244311 in words is "two hundred thirteen billion, one hundred thirty million, two hundred forty-four thousand, three hundred eleven".