212816471 has 8 divisors (see below), whose sum is σ = 251605920. Its totient is φ = 176123808.

The previous prime is 212816467. The next prime is 212816479. The reversal of 212816471 is 174618212.

It is a happy number.

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

It is not a de Polignac number, because 212816471 - 2² = 212816467 is a prime.

It is a super-3 number, since 3×212816471³ (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 (212816479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523976 + ... + 524381.

It is an arithmetic number, because the mean of its divisors is an integer number (31450740).

Almost surely, 2^212816471 is an apocalyptic number.

212816471 is a deficient number, since it is larger than the sum of its proper divisors (38789449).

212816471 is a wasteful number, since it uses less digits than its factorization.

212816471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048393.

The product of its digits is 5376, while the sum is 32.

The square root of 212816471 is about 14588.2305643968. The cubic root of 212816471 is about 597.0376865308.

The spelling of 212816471 in words is "two hundred twelve million, eight hundred sixteen thousand, four hundred seventy-one".