1312104205 has 8 divisors (see below), whose sum is σ = 1600337304. Its totient is φ = 1032475200.

The previous prime is 1312104173. The next prime is 1312104221. The reversal of 1312104205 is 5024012131.

It can be written as a sum of positive squares in 4 ways, for example, as 108430569 + 1203673636 = 10413^2 + 34694^2 .

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

It is not a de Polignac number, because 1312104205 - 2⁵ = 1312104173 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, 2150686 + ... + 2151295.

It is an arithmetic number, because the mean of its divisors is an integer number (200042163).

Almost surely, 2^1312104205 is an apocalyptic number.

It is an amenable number.

1312104205 is a deficient number, since it is larger than the sum of its proper divisors (288233099).

1312104205 is an equidigital number, since it uses as much as digits as its factorization.

1312104205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302047.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1312104205 is about 36222.9789636358. The cubic root of 1312104205 is about 1094.7697172865.

Adding to 1312104205 its reverse (5024012131), we get a palindrome (6336116336).

The spelling of 1312104205 in words is "one billion, three hundred twelve million, one hundred four thousand, two hundred five".