1313965 has 8 divisors (see below), whose sum is σ = 1583640. Its totient is φ = 1046592.

The previous prime is 1313959. The next prime is 1313987. The reversal of 1313965 is 5693131.

It can be written as a sum of positive squares in 4 ways, for example, as 9801 + 1304164 = 99^2 + 1142^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1313965 - 2³ = 1313957 is a prime.

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, 1171 + ... + 1999.

It is an arithmetic number, because the mean of its divisors is an integer number (197955).

2^1313965 is an apocalyptic number.

It is an amenable number.

1313965 is a deficient number, since it is larger than the sum of its proper divisors (269675).

1313965 is an equidigital number, since it uses as much as digits as its factorization.

1313965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

The product of its digits is 2430, while the sum is 28.

The square root of 1313965 is about 1146.2831238398. The cubic root of 1313965 is about 109.5286998297.

It can be divided in two parts, 1313 and 965, that added together give a triangular number (2278 = T₆₇).

The spelling of 1313965 in words is "one million, three hundred thirteen thousand, nine hundred sixty-five".