213403232 has 36 divisors (see below), whose sum is σ = 488735100. Its totient is φ = 91457856.

The previous prime is 213403217. The next prime is 213403243. The reversal of 213403232 is 232304312.

213403232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66482 + ... + 69617.

It is an arithmetic number, because the mean of its divisors is an integer number (13575975).

Almost surely, 2^213403232 is an apocalyptic number.

It is an amenable number.

213403232 is an abundant number, since it is smaller than the sum of its proper divisors (275331868).

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

213403232 is a wasteful number, since it uses less digits than its factorization.

213403232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136123 (or 136108 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 213403232 is about 14608.3274881144. The cubic root of 213403232 is about 597.5858849600.

Adding to 213403232 its reverse (232304312), we get a palindrome (445707544).

The spelling of 213403232 in words is "two hundred thirteen million, four hundred three thousand, two hundred thirty-two".