212731083827 has 4 divisors (see below), whose sum is σ = 223927456680. Its totient is φ = 201534710976.

The previous prime is 212731083809. The next prime is 212731083853. The reversal of 212731083827 is 728380137212.

212731083827 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 a cyclic number.

It is not a de Polignac number, because 212731083827 - 2¹⁰ = 212731082803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212731083127) 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, 5598186398 + ... + 5598186435.

It is an arithmetic number, because the mean of its divisors is an integer number (55981864170).

Almost surely, 2^212731083827 is an apocalyptic number.

212731083827 is a deficient number, since it is larger than the sum of its proper divisors (11196372853).

212731083827 is a wasteful number, since it uses less digits than its factorization.

212731083827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11196372852.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 212731083827 in words is "two hundred twelve billion, seven hundred thirty-one million, eighty-three thousand, eight hundred twenty-seven".