1310965 has 4 divisors (see below), whose sum is σ = 1573164. Its totient is φ = 1048768.

The previous prime is 1310963. The next prime is 1310987. The reversal of 1310965 is 5690131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 276676 = 1017^2 + 526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310965 - 2¹ = 1310963 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131092 + ... + 131101.

It is an arithmetic number, because the mean of its divisors is an integer number (393291).

2^1310965 is an apocalyptic number.

It is an amenable number.

1310965 is a deficient number, since it is larger than the sum of its proper divisors (262199).

1310965 is an equidigital number, since it uses as much as digits as its factorization.

1310965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262198.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1310965 is about 1144.9737988269. The cubic root of 1310965 is about 109.4452789142.

The spelling of 1310965 in words is "one million, three hundred ten thousand, nine hundred sixty-five".