1315191 has 8 divisors (see below), whose sum is σ = 1763200. Its totient is φ = 871992.

The previous prime is 1315187. The next prime is 1315211. The reversal of 1315191 is 1915131.

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

It is not a de Polignac number, because 1315191 - 2² = 1315187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315151) 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, 505 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (220400).

2^1315191 is an apocalyptic number.

1315191 is a deficient number, since it is larger than the sum of its proper divisors (448009).

1315191 is a wasteful number, since it uses less digits than its factorization.

1315191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405.

The product of its digits is 135, while the sum is 21.

The square root of 1315191 is about 1146.8177710517. The cubic root of 1315191 is about 109.5627546290.

The spelling of 1315191 in words is "one million, three hundred fifteen thousand, one hundred ninety-one".