212443300031 has 4 divisors (see below), whose sum is σ = 212444307000. Its totient is φ = 212442293064.

The previous prime is 212443300021. The next prime is 212443300057. The reversal of 212443300031 is 130003344212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212443300031 - 2¹⁰ = 212443299007 is a prime.

It is a super-2 number, since 2×212443300031² (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 (212443300021) 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, 52181 + ... + 653918.

It is an arithmetic number, because the mean of its divisors is an integer number (53111076750).

Almost surely, 2^212443300031 is an apocalyptic number.

212443300031 is a deficient number, since it is larger than the sum of its proper divisors (1006969).

212443300031 is an equidigital number, since it uses as much as digits as its factorization.

212443300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006968.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 212443300031 its reverse (130003344212), we get a palindrome (342446644243).

The spelling of 212443300031 in words is "two hundred twelve billion, four hundred forty-three million, three hundred thousand, thirty-one".