213123132032 has 16 divisors (see below), whose sum is σ = 424581239850. Its totient is φ = 106561565952.

The previous prime is 213123132029. The next prime is 213123132049. The reversal of 213123132032 is 230231321312.

It can be written as a sum of positive squares in only one way, i.e., 212240804416 + 882327616 = 460696^2 + 29704^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 213123131989 and 213123132007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832512107 + ... + 832512362.

Almost surely, 2^213123132032 is an apocalyptic number.

It is an amenable number.

213123132032 is a deficient number, since it is larger than the sum of its proper divisors (211458107818).

213123132032 is an equidigital number, since it uses as much as digits as its factorization.

213123132032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665024483 (or 1665024471 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213123132032 its reverse (230231321312), we get a palindrome (443354453344).

The spelling of 213123132032 in words is "two hundred thirteen billion, one hundred twenty-three million, one hundred thirty-two thousand, thirty-two".