212843471 has 4 divisors (see below), whose sum is σ = 213475392. Its totient is φ = 212211552.

The previous prime is 212843467. The next prime is 212843479. The reversal of 212843471 is 174348212.

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 212843471 - 2² = 212843467 is a prime.

It is a super-3 number, since 3×212843471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212843479) 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, 315455 + ... + 316128.

It is an arithmetic number, because the mean of its divisors is an integer number (53368848).

Almost surely, 2^212843471 is an apocalyptic number.

212843471 is a deficient number, since it is larger than the sum of its proper divisors (631921).

212843471 is an equidigital number, since it uses as much as digits as its factorization.

212843471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631920.

The product of its digits is 10752, while the sum is 32.

The square root of 212843471 is about 14589.1559385730. The cubic root of 212843471 is about 597.0629341628.

The spelling of 212843471 in words is "two hundred twelve million, eight hundred forty-three thousand, four hundred seventy-one".