1303265 has 8 divisors (see below), whose sum is σ = 1589928. Its totient is φ = 1025280.

The previous prime is 1303261. The next prime is 1303279. The reversal of 1303265 is 5623031.

It can be written as a sum of positive squares in 4 ways, for example, as 12769 + 1290496 = 113^2 + 1136^2 .

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

It is not a de Polignac number, because 1303265 - 2² = 1303261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (198741).

2^1303265 is an apocalyptic number.

It is an amenable number.

1303265 is a deficient number, since it is larger than the sum of its proper divisors (286663).

1303265 is an equidigital number, since it uses as much as digits as its factorization.

1303265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1303265 is about 1141.6063244394. The cubic root of 1303265 is about 109.2305810937.

Adding to 1303265 its reverse (5623031), we get a palindrome (6926296).

The spelling of 1303265 in words is "one million, three hundred three thousand, two hundred sixty-five".