1313691 has 16 divisors (see below), whose sum is σ = 1858560. Its totient is φ = 823680.

The previous prime is 1313677. The next prime is 1313699. The reversal of 1313691 is 1963131.

It is not a de Polignac number, because 1313691 - 2¹⁰ = 1312667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5331 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (116160).

2^1313691 is an apocalyptic number.

1313691 is a deficient number, since it is larger than the sum of its proper divisors (544869).

1313691 is a wasteful number, since it uses less digits than its factorization.

1313691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its digits is 486, while the sum is 24.

The square root of 1313691 is about 1146.1636008878. The cubic root of 1313691 is about 109.5210859916.

The spelling of 1313691 in words is "one million, three hundred thirteen thousand, six hundred ninety-one".