213244432 has 10 divisors (see below), whose sum is σ = 413161118. Its totient is φ = 106622208.

The previous prime is 213244417. The next prime is 213244441. The reversal of 213244432 is 234442312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 203233536 + 10010896 = 14256^2 + 3164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213244397 and 213244406.

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 as a sum of consecutive naturals, namely, 6663873 + ... + 6663904.

Almost surely, 2^213244432 is an apocalyptic number.

It is an amenable number.

213244432 is a deficient number, since it is larger than the sum of its proper divisors (199916686).

213244432 is a wasteful number, since it uses less digits than its factorization.

213244432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13327785 (or 13327779 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 213244432 is about 14602.8912205768. The cubic root of 213244432 is about 597.4376207469.

Adding to 213244432 its reverse (234442312), we get a palindrome (447686744).

It can be divided in two parts, 2132 and 44432, that added together give a palindrome (46564).

The spelling of 213244432 in words is "two hundred thirteen million, two hundred forty-four thousand, four hundred thirty-two".