1313011013 has 4 divisors (see below), whose sum is σ = 1313126400. Its totient is φ = 1312895628.

The previous prime is 1313010991. The next prime is 1313011033. The reversal of 1313011013 is 3101103131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313011013 - 2¹⁰ = 1313009989 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 (1313011033) 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, 38495 + ... + 64092.

It is an arithmetic number, because the mean of its divisors is an integer number (328281600).

Almost surely, 2^1313011013 is an apocalyptic number.

It is an amenable number.

1313011013 is a deficient number, since it is larger than the sum of its proper divisors (115387).

1313011013 is a wasteful number, since it uses less digits than its factorization.

1313011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115386.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1313011013 is about 36235.4938285654. The cubic root of 1313011013 is about 1095.0218612150.

Adding to 1313011013 its reverse (3101103131), we get a palindrome (4414114144).

The spelling of 1313011013 in words is "one billion, three hundred thirteen million, eleven thousand, thirteen".