212731876730 has 8 divisors (see below), whose sum is σ = 382917378132. Its totient is φ = 85092750688.

The previous prime is 212731876729. The next prime is 212731876733. The reversal of 212731876730 is 37678137212.

It can be written as a sum of positive squares in 2 ways, for example, as 193776920401 + 18954956329 = 440201^2 + 137677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212731876733) 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, 10636593827 + ... + 10636593846.

Almost surely, 2^212731876730 is an apocalyptic number.

212731876730 is a deficient number, since it is larger than the sum of its proper divisors (170185501402).

212731876730 is a wasteful number, since it uses less digits than its factorization.

212731876730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21273187680.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 212731876730 in words is "two hundred twelve billion, seven hundred thirty-one million, eight hundred seventy-six thousand, seven hundred thirty".