212327505 has 24 divisors (see below), whose sum is σ = 396345768. Its totient is φ = 104530176.

The previous prime is 212327503. The next prime is 212327509. The reversal of 212327505 is 505723212.

It can be written as a sum of positive squares in 4 ways, for example, as 4016016 + 208311489 = 2004^2 + 14433^2 .

It is not a de Polignac number, because 212327505 - 2¹ = 212327503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212327503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180892 + ... + 182061.

It is an arithmetic number, because the mean of its divisors is an integer number (16514407).

Almost surely, 2^212327505 is an apocalyptic number.

It is an amenable number.

212327505 is a deficient number, since it is larger than the sum of its proper divisors (184018263).

212327505 is a wasteful number, since it uses less digits than its factorization.

212327505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362977 (or 362974 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 212327505 is about 14571.4620062642. The cubic root of 212327505 is about 596.5800856792.

The spelling of 212327505 in words is "two hundred twelve million, three hundred twenty-seven thousand, five hundred five".