213213233232 has 80 divisors (see below), whose sum is σ = 648001025280. Its totient is φ = 66890423808.

The previous prime is 213213233213. The next prime is 213213233257. The reversal of 213213233232 is 232332312312.

213213233232 is a `hidden beast` number, since 2 + 1 + 321 + 3 + 2 + 332 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 213213233196 and 213213233205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14508808 + ... + 14523495.

It is an arithmetic number, because the mean of its divisors is an integer number (8100012816).

Almost surely, 2^213213233232 is an apocalyptic number.

It is an amenable number.

213213233232 is an abundant number, since it is smaller than the sum of its proper divisors (434787792048).

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

213213233232 is a wasteful number, since it uses less digits than its factorization.

213213233232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29032337 (or 29032325 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 213213233232 its reverse (232332312312), we get a palindrome (445545545544).

The spelling of 213213233232 in words is "two hundred thirteen billion, two hundred thirteen million, two hundred thirty-three thousand, two hundred thirty-two".