1312105 has 8 divisors (see below), whose sum is σ = 1629000. Its totient is φ = 1013376.

The previous prime is 1312093. The next prime is 1312133. The reversal of 1312105 is 5012131.

It can be written as a sum of positive squares in 4 ways, for example, as 318096 + 994009 = 564^2 + 997^2 .

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

It is not a de Polignac number, because 1312105 - 2¹⁵ = 1279337 is a prime.

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, 4380 + ... + 4669.

It is an arithmetic number, because the mean of its divisors is an integer number (203625).

2^1312105 is an apocalyptic number.

It is an amenable number.

1312105 is a deficient number, since it is larger than the sum of its proper divisors (316895).

1312105 is an equidigital number, since it uses as much as digits as its factorization.

1312105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9083.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1312105 is about 1145.4715186333. The cubic root of 1312105 is about 109.4769938392.

Adding to 1312105 its reverse (5012131), we get a palindrome (6324236).

The spelling of 1312105 in words is "one million, three hundred twelve thousand, one hundred five".