1312279 has 8 divisors (see below), whose sum is σ = 1395360. Its totient is φ = 1231776.

The previous prime is 1312277. The next prime is 1312301. The reversal of 1312279 is 9722131.

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 1312279 - 2¹ = 1312277 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 1684.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

2^1312279 is an apocalyptic number.

1312279 is a deficient number, since it is larger than the sum of its proper divisors (83081).

1312279 is a wasteful number, since it uses less digits than its factorization.

1312279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289.

The product of its digits is 756, while the sum is 25.

The square root of 1312279 is about 1145.5474673710. The cubic root of 1312279 is about 109.4818329222.

The spelling of 1312279 in words is "one million, three hundred twelve thousand, two hundred seventy-nine".