13213204232 has 8 divisors (see below), whose sum is σ = 24774757950. Its totient is φ = 6606602112.

The previous prime is 13213204187. The next prime is 13213204237. The reversal of 13213204232 is 23240231231.

It can be written as a sum of positive squares in only one way, i.e., 9926933956 + 3286270276 = 99634^2 + 57326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13213204198 and 13213204207.

It is not an unprimeable number, because it can be changed into a prime (13213204237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825825257 + ... + 825825272.

Almost surely, 2^13213204232 is an apocalyptic number.

It is an amenable number.

13213204232 is a deficient number, since it is larger than the sum of its proper divisors (11561553718).

13213204232 is a wasteful number, since it uses less digits than its factorization.

13213204232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651650535 (or 1651650531 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13213204232 its reverse (23240231231), we get a palindrome (36453435463).

The spelling of 13213204232 in words is "thirteen billion, two hundred thirteen million, two hundred four thousand, two hundred thirty-two".