213213431432 has 16 divisors (see below), whose sum is σ = 399808380300. Its totient is φ = 106597863360.

The previous prime is 213213431419. The next prime is 213213431441. The reversal of 213213431432 is 234134312312.

213213431432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 145287519556 + 67925911876 = 381166^2 + 260626^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213213431395 and 213213431404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003619 + ... + 1197362.

Almost surely, 2^213213431432 is an apocalyptic number.

It is an amenable number.

213213431432 is a deficient number, since it is larger than the sum of its proper divisors (186594948868).

213213431432 is a wasteful number, since it uses less digits than its factorization.

213213431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213096 (or 2213092 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

Adding to 213213431432 its reverse (234134312312), we get a palindrome (447347743744).

The spelling of 213213431432 in words is "two hundred thirteen billion, two hundred thirteen million, four hundred thirty-one thousand, four hundred thirty-two".