212397471 has 60 divisors (see below), whose sum is σ = 375803736. Its totient is φ = 118752480.

The previous prime is 212397457. The next prime is 212397481. The reversal of 212397471 is 174793212.

It is not a de Polignac number, because 212397471 - 2⁶ = 212397407 is a prime.

It is a super-3 number, since 3×212397471³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212397401) 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 59 ways as a sum of consecutive naturals, for example, 126580 + ... + 128246.

Almost surely, 2^212397471 is an apocalyptic number.

212397471 is a deficient number, since it is larger than the sum of its proper divisors (163406265).

212397471 is a wasteful number, since it uses less digits than its factorization.

212397471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1694 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 212397471 is about 14573.8625971291. The cubic root of 212397471 is about 596.6456066902.

The spelling of 212397471 in words is "two hundred twelve million, three hundred ninety-seven thousand, four hundred seventy-one".