212301243 has 40 divisors (see below), whose sum is σ = 395408640. Its totient is φ = 110283120.

The previous prime is 212301197. The next prime is 212301263. The reversal of 212301243 is 342103212.

It is not a de Polignac number, because 212301243 - 2⁶ = 212301179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212301263) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10783 + ... + 23256.

It is an arithmetic number, because the mean of its divisors is an integer number (9885216).

Almost surely, 2^212301243 is an apocalyptic number.

212301243 is a deficient number, since it is larger than the sum of its proper divisors (183107397).

212301243 is a wasteful number, since it uses less digits than its factorization.

212301243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34069 (or 34060 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212301243 is about 14570.5608334065. The cubic root of 212301243 is about 596.5554884072. Note that the first 3 decimals are identical.

Adding to 212301243 its reverse (342103212), we get a palindrome (554404455).

The spelling of 212301243 in words is "two hundred twelve million, three hundred one thousand, two hundred forty-three".