1391315 has 8 divisors (see below), whose sum is σ = 1675968. Its totient is φ = 1108800.

The previous prime is 1391287. The next prime is 1391317. The reversal of 1391315 is 5131931.

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

It is a de Polignac number, because none of the positive numbers 2^k-1391315 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391317) 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, 2015 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (209496).

2^1391315 is an apocalyptic number.

1391315 is a deficient number, since it is larger than the sum of its proper divisors (284653).

1391315 is an equidigital number, since it uses as much as digits as its factorization.

1391315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069.

The product of its digits is 405, while the sum is 23.

The square root of 1391315 is about 1179.5401646404. The cubic root of 1391315 is about 111.6370853056.

The spelling of 1391315 in words is "one million, three hundred ninety-one thousand, three hundred fifteen".