231310020211 has 2 divisors, whose sum is σ = 231310020212. Its totient is φ = 231310020210.

The previous prime is 231310020157. The next prime is 231310020241. The reversal of 231310020211 is 112020013132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231310020211 - 2¹⁵ = 231309987443 is a prime.

It is not a weakly prime, because it can be changed into another prime (231310020241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655010105 + 115655010106.

It is an arithmetic number, because the mean of its divisors is an integer number (115655010106).

Almost surely, 2^231310020211 is an apocalyptic number.

231310020211 is a deficient number, since it is larger than the sum of its proper divisors (1).

231310020211 is an equidigital number, since it uses as much as digits as its factorization.

231310020211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231310020211 its reverse (112020013132), we get a palindrome (343330033343).

The spelling of 231310020211 in words is "two hundred thirty-one billion, three hundred ten million, twenty thousand, two hundred eleven".