212275378231 has 4 divisors (see below), whose sum is σ = 242600432272. Its totient is φ = 181950324192.

The previous prime is 212275378207. The next prime is 212275378267. The reversal of 212275378231 is 132873572212.

212275378231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212275378231 - 2¹⁷ = 212275247159 is a prime.

It is a super-2 number, since 2×212275378231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212275376231) 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 3 ways as a sum of consecutive naturals, for example, 15162527010 + ... + 15162527023.

It is an arithmetic number, because the mean of its divisors is an integer number (60650108068).

Almost surely, 2^212275378231 is an apocalyptic number.

212275378231 is a deficient number, since it is larger than the sum of its proper divisors (30325054041).

212275378231 is an equidigital number, since it uses as much as digits as its factorization.

212275378231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30325054040.

The product of its digits is 282240, while the sum is 43.

The spelling of 212275378231 in words is "two hundred twelve billion, two hundred seventy-five million, three hundred seventy-eight thousand, two hundred thirty-one".