231204012616 has 16 divisors (see below), whose sum is σ = 433513577340. Its totient is φ = 115600392000.

The previous prime is 231204012601. The next prime is 231204012643. The reversal of 231204012616 is 616210402132.

It can be written as a sum of positive squares in 2 ways, for example, as 190055890116 + 41148122500 = 435954^2 + 202850^2 .

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 3 ways as a sum of consecutive naturals, for example, 589366 + ... + 899866.

Almost surely, 2^231204012616 is an apocalyptic number.

It is an amenable number.

231204012616 is a deficient number, since it is larger than the sum of its proper divisors (202309564724).

231204012616 is a wasteful number, since it uses less digits than its factorization.

231204012616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403584 (or 403580 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 231204012616 its reverse (616210402132), we get a palindrome (847414414748).

The spelling of 231204012616 in words is "two hundred thirty-one billion, two hundred four million, twelve thousand, six hundred sixteen".