1315131 has 4 divisors (see below), whose sum is σ = 1753512. Its totient is φ = 876752.

The previous prime is 1315087. The next prime is 1315151.

1315131 is nontrivially palindromic in base 10.

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 1315131 - 2⁷ = 1315003 is a prime.

It is a super-2 number, since 2×1315131² = 3459139094322, which contains 22 as substring.

It is a D-number.

1315131 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315131.

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 3 ways as a sum of consecutive naturals, for example, 219186 + ... + 219191.

It is an arithmetic number, because the mean of its divisors is an integer number (438378).

2^1315131 is an apocalyptic number.

1315131 is a deficient number, since it is larger than the sum of its proper divisors (438381).

1315131 is an equidigital number, since it uses as much as digits as its factorization.

1315131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438380.

The product of its digits is 45, while the sum is 15.

The square root of 1315131 is about 1146.7916114098. The cubic root of 1315131 is about 109.5610884920.

The spelling of 1315131 in words is "one million, three hundred fifteen thousand, one hundred thirty-one".