212650307 has 4 divisors (see below), whose sum is σ = 212681760. Its totient is φ = 212618856.

The previous prime is 212650303. The next prime is 212650309. The reversal of 212650307 is 703056212.

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 212650307 - 2² = 212650303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212650303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968 + ... + 20645.

It is an arithmetic number, because the mean of its divisors is an integer number (53170440).

Almost surely, 2^212650307 is an apocalyptic number.

212650307 is a deficient number, since it is larger than the sum of its proper divisors (31453).

212650307 is an equidigital number, since it uses as much as digits as its factorization.

212650307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31452.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 212650307 is about 14582.5343133490. The cubic root of 212650307 is about 596.8822599630.

The spelling of 212650307 in words is "two hundred twelve million, six hundred fifty thousand, three hundred seven".