1312339 has 4 divisors (see below), whose sum is σ = 1499824. Its totient is φ = 1124856.

The previous prime is 1312331. The next prime is 1312343. The reversal of 1312339 is 9332131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312339 - 2³ = 1312331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312331) 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, 93732 + ... + 93745.

It is an arithmetic number, because the mean of its divisors is an integer number (374956).

2^1312339 is an apocalyptic number.

1312339 is a deficient number, since it is larger than the sum of its proper divisors (187485).

1312339 is an equidigital number, since it uses as much as digits as its factorization.

1312339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187484.

The product of its digits is 486, while the sum is 22.

The square root of 1312339 is about 1145.5736554233. The cubic root of 1312339 is about 109.4835014723.

The spelling of 1312339 in words is "one million, three hundred twelve thousand, three hundred thirty-nine".