211303231013 has 6 divisors (see below), whose sum is σ = 245801717766. Its totient is φ = 181117055112.

The previous prime is 211303231001. The next prime is 211303231031. The reversal of 211303231013 is 310132303112.

211303231013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 207879459844 + 3423771169 = 455938^2 + 58513^2 .

It is not a de Polignac number, because 211303231013 - 2⁶ = 211303230949 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 (211303231043) 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 5 ways as a sum of consecutive naturals, for example, 2156155370 + ... + 2156155467.

It is an arithmetic number, because the mean of its divisors is an integer number (40966952961).

Almost surely, 2^211303231013 is an apocalyptic number.

It is an amenable number.

211303231013 is a deficient number, since it is larger than the sum of its proper divisors (34498486753).

211303231013 is an equidigital number, since it uses as much as digits as its factorization.

211303231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312310851 (or 4312310844 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 211303231013 its reverse (310132303112), we get a palindrome (521435534125).

The spelling of 211303231013 in words is "two hundred eleven billion, three hundred three million, two hundred thirty-one thousand, thirteen".