213203434112404 has 12 divisors (see below), whose sum is σ = 373126185352564. Its totient is φ = 106595952583104.

The previous prime is 213203434112387. The next prime is 213203434112503. The reversal of 213203434112404 is 404211434302312.

It can be written as a sum of positive squares in 2 ways, for example, as 123638788012804 + 89564646099600 = 11119298^2 + 9463860^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213203434112404.

It is a congruent number.

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, 1441035057 + ... + 1441183000.

Almost surely, 2^{213203434112404} is an apocalyptic number.

It is an amenable number.

213203434112404 is a deficient number, since it is larger than the sum of its proper divisors (159922751240160).

213203434112404 is a wasteful number, since it uses less digits than its factorization.

213203434112404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882236554 (or 2882236552 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 213203434112404 its reverse (404211434302312), we get a palindrome (617414868414716).

The spelling of 213203434112404 in words is "two hundred thirteen trillion, two hundred three billion, four hundred thirty-four million, one hundred twelve thousand, four hundred four".