1312869 has 8 divisors (see below), whose sum is σ = 1756000. Its totient is φ = 872496.

The previous prime is 1312867. The next prime is 1312873. The reversal of 1312869 is 9682131.

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

It is not a de Polignac number, because 1312869 - 2¹ = 1312867 is a prime.

It is a super-3 number, since 3×1312869³ = 6788681534333792727, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

1312869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (219500).

2^1312869 is an apocalyptic number.

It is an amenable number.

1312869 is a deficient number, since it is larger than the sum of its proper divisors (443131).

1312869 is an equidigital number, since it uses as much as digits as its factorization.

1312869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its digits is 2592, while the sum is 30.

The square root of 1312869 is about 1145.8049572244. The cubic root of 1312869 is about 109.4982381235.

The spelling of 1312869 in words is "one million, three hundred twelve thousand, eight hundred sixty-nine".