1312200205 has 8 divisors (see below), whose sum is σ = 1574836704. Its totient is φ = 1049629200.

The previous prime is 1312200187. The next prime is 1312200217. The reversal of 1312200205 is 5020022131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1312200205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60690 + ... + 79420.

It is an arithmetic number, because the mean of its divisors is an integer number (196854588).

Almost surely, 2^1312200205 is an apocalyptic number.

It is an amenable number.

1312200205 is a deficient number, since it is larger than the sum of its proper divisors (262636499).

1312200205 is a wasteful number, since it uses less digits than its factorization.

1312200205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32747.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1312200205 is about 36224.3040650887. The cubic root of 1312200205 is about 1094.7964162152.

Adding to 1312200205 its reverse (5020022131), we get a palindrome (6332222336).

The spelling of 1312200205 in words is "one billion, three hundred twelve million, two hundred thousand, two hundred five".