1315321 has 8 divisors (see below), whose sum is σ = 1540224. Its totient is φ = 1099680.

The previous prime is 1315309. The next prime is 1315367. The reversal of 1315321 is 1235131.

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 1315321 - 2⁵ = 1315289 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1315295 and 1315304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315621) 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, 2005 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (192528).

2^1315321 is an apocalyptic number.

It is an amenable number.

1315321 is a deficient number, since it is larger than the sum of its proper divisors (224903).

1315321 is an equidigital number, since it uses as much as digits as its factorization.

1315321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631.

The product of its digits is 90, while the sum is 16.

The square root of 1315321 is about 1146.8744482288. The cubic root of 1315321 is about 109.5663644188.

The spelling of 1315321 in words is "one million, three hundred fifteen thousand, three hundred twenty-one".