213345432 has 24 divisors (see below), whose sum is σ = 577810740. Its totient is φ = 71115120.

The previous prime is 213345397. The next prime is 213345439. The reversal of 213345432 is 234543312.

213345432 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 213345396 and 213345405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213345439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1481494 + ... + 1481637.

Almost surely, 2^213345432 is an apocalyptic number.

It is an amenable number.

213345432 is an abundant number, since it is smaller than the sum of its proper divisors (364465308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213345432 is a wasteful number, since it uses less digits than its factorization.

213345432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963143 (or 2963136 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 213345432 is about 14606.3490304730. The cubic root of 213345432 is about 597.5319282904.

Adding to 213345432 its reverse (234543312), we get a palindrome (447888744).

The spelling of 213345432 in words is "two hundred thirteen million, three hundred forty-five thousand, four hundred thirty-two".