212513432 has 16 divisors (see below), whose sum is σ = 411316800. Its totient is φ = 102828960.

The previous prime is 212513419. The next prime is 212513443. The reversal of 212513432 is 234315212.

It is a junction number, because it is equal to n+sod(n) for n = 212513398 and 212513407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428207 + ... + 428702.

It is an arithmetic number, because the mean of its divisors is an integer number (25707300).

Almost surely, 2^212513432 is an apocalyptic number.

It is an amenable number.

212513432 is a deficient number, since it is larger than the sum of its proper divisors (198803368).

212513432 is a wasteful number, since it uses less digits than its factorization.

212513432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856946 (or 856942 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 212513432 is about 14577.8404436322. The cubic root of 212513432 is about 596.7541689272.

Adding to 212513432 its reverse (234315212), we get a palindrome (446828644).

The spelling of 212513432 in words is "two hundred twelve million, five hundred thirteen thousand, four hundred thirty-two".