212313947 has 8 divisors (see below), whose sum is σ = 220480512. Its totient is φ = 204229800.

The previous prime is 212313931. The next prime is 212313967. The reversal of 212313947 is 749313212.

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

It is a cyclic number.

It is not a de Polignac number, because 212313947 - 2⁴ = 212313931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212313967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15329 + ... + 25682.

It is an arithmetic number, because the mean of its divisors is an integer number (27560064).

Almost surely, 2^212313947 is an apocalyptic number.

212313947 is a deficient number, since it is larger than the sum of its proper divisors (8166565).

212313947 is a wasteful number, since it uses less digits than its factorization.

212313947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41209.

The product of its digits is 9072, while the sum is 32.

The square root of 212313947 is about 14570.9967744146. The cubic root of 212313947 is about 596.5673873637.

The spelling of 212313947 in words is "two hundred twelve million, three hundred thirteen thousand, nine hundred forty-seven".