213332432 has 20 divisors (see below), whose sum is σ = 413561700. Its totient is φ = 106606848.

The previous prime is 213332423. The next prime is 213332447. The reversal of 213332432 is 234233312.

213332432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 67502656 + 145829776 = 8216^2 + 12076^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213332398 and 213332407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46598 + ... + 50970.

It is an arithmetic number, because the mean of its divisors is an integer number (20678085).

Almost surely, 2^213332432 is an apocalyptic number.

It is an amenable number.

213332432 is a deficient number, since it is larger than the sum of its proper divisors (200229268).

213332432 is a wasteful number, since it uses less digits than its factorization.

213332432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7430 (or 7424 counting only the distinct ones).

The product of its digits is 2592, while the sum is 23.

The square root of 213332432 is about 14605.9040117344. The cubic root of 213332432 is about 597.5197913649.

Adding to 213332432 its reverse (234233312), we get a palindrome (447565744).

The spelling of 213332432 in words is "two hundred thirteen million, three hundred thirty-two thousand, four hundred thirty-two".