2312161205 has 16 divisors (see below), whose sum is σ = 2921832000. Its totient is φ = 1751650560.

The previous prime is 2312161183. The next prime is 2312161217. The reversal of 2312161205 is 5021612132.

2312161205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2312161205 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381650 + ... + 387660.

It is an arithmetic number, because the mean of its divisors is an integer number (182614500).

Almost surely, 2^2312161205 is an apocalyptic number.

It is an amenable number.

2312161205 is a deficient number, since it is larger than the sum of its proper divisors (609670795).

2312161205 is a wasteful number, since it uses less digits than its factorization.

2312161205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10084.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2312161205 is about 48084.9374024756. The cubic root of 2312161205 is about 1322.3285355346.

Adding to 2312161205 its reverse (5021612132), we get a palindrome (7333773337).

The spelling of 2312161205 in words is "two billion, three hundred twelve million, one hundred sixty-one thousand, two hundred five".