1313491 has 4 divisors (see below), whose sum is σ = 1315800. Its totient is φ = 1311184.

The previous prime is 1313467. The next prime is 1313567. The reversal of 1313491 is 1943131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1313491 - 2⁷ = 1313363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313891) 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, 375 + ... + 1663.

It is an arithmetic number, because the mean of its divisors is an integer number (328950).

2^1313491 is an apocalyptic number.

1313491 is a deficient number, since it is larger than the sum of its proper divisors (2309).

1313491 is a wasteful number, since it uses less digits than its factorization.

1313491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308.

The product of its digits is 324, while the sum is 22.

The square root of 1313491 is about 1146.0763499872. The cubic root of 1313491 is about 109.5155277772.

It can be divided in two parts, 13134 and 91, that added together give a square (13225 = 115²).

The spelling of 1313491 in words is "one million, three hundred thirteen thousand, four hundred ninety-one".