1313265427 has 16 divisors (see below), whose sum is σ = 1403776000. Its totient is φ = 1224984384.

The previous prime is 1313265413. The next prime is 1313265433. The reversal of 1313265427 is 7245623131.

It is a cyclic number.

It is not a de Polignac number, because 1313265427 - 2¹⁵ = 1313232659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313265392 and 1313265401.

It is not an unprimeable number, because it can be changed into a prime (1313265407) 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, 657943 + ... + 659935.

It is an arithmetic number, because the mean of its divisors is an integer number (87736000).

Almost surely, 2^1313265427 is an apocalyptic number.

1313265427 is a deficient number, since it is larger than the sum of its proper divisors (90510573).

1313265427 is a wasteful number, since it uses less digits than its factorization.

1313265427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530.

The product of its digits is 30240, while the sum is 34.

The square root of 1313265427 is about 36239.0042219706. The cubic root of 1313265427 is about 1095.0925818456.

Adding to 1313265427 its reverse (7245623131), we get a palindrome (8558888558).

The spelling of 1313265427 in words is "one billion, three hundred thirteen million, two hundred sixty-five thousand, four hundred twenty-seven".