211012303231 has 4 divisors (see below), whose sum is σ = 215501926752. Its totient is φ = 206522679712.

The previous prime is 211012303207. The next prime is 211012303297. The reversal of 211012303231 is 132303210112.

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 211012303231 - 2⁹ = 211012302719 is a prime.

It is a super-2 number, since 2×211012303231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012303199 and 211012303208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012303031) 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, 2244811690 + ... + 2244811783.

It is an arithmetic number, because the mean of its divisors is an integer number (53875481688).

Almost surely, 2^211012303231 is an apocalyptic number.

211012303231 is a deficient number, since it is larger than the sum of its proper divisors (4489623521).

211012303231 is an equidigital number, since it uses as much as digits as its factorization.

211012303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489623520.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211012303231 its reverse (132303210112), we get a palindrome (343315513343).

The spelling of 211012303231 in words is "two hundred eleven billion, twelve million, three hundred three thousand, two hundred thirty-one".