211304213131 has 12 divisors (see below), whose sum is σ = 232392729016. Its totient is φ = 191984965920.

The previous prime is 211304213129. The next prime is 211304213161. The reversal of 211304213131 is 131312403112.

211304213131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211304213131 - 2¹ = 211304213129 is a prime.

It is a super-2 number, since 2×211304213131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211304213161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285981 + ... + 710206.

Almost surely, 2^211304213131 is an apocalyptic number.

211304213131 is a deficient number, since it is larger than the sum of its proper divisors (21088515885).

211304213131 is a wasteful number, since it uses less digits than its factorization.

211304213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997962 (or 997951 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 211304213131 its reverse (131312403112), we get a palindrome (342616616243).

The spelling of 211304213131 in words is "two hundred eleven billion, three hundred four million, two hundred thirteen thousand, one hundred thirty-one".