1311230013 has 8 divisors (see below), whose sum is σ = 1795558368. Its totient is φ = 850527504.

The previous prime is 1311229981. The next prime is 1311230021. The reversal of 1311230013 is 3100321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311230013 - 2⁵ = 1311229981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311229974 and 1311230001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311230813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906331 + ... + 5906552.

It is an arithmetic number, because the mean of its divisors is an integer number (224444796).

Almost surely, 2^1311230013 is an apocalyptic number.

It is an amenable number.

1311230013 is a deficient number, since it is larger than the sum of its proper divisors (484328355).

1311230013 is a wasteful number, since it uses less digits than its factorization.

1311230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11812923.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311230013 is about 36210.9101376919. The cubic root of 1311230013 is about 1094.5265324472.

Adding to 1311230013 its reverse (3100321131), we get a palindrome (4411551144).

The spelling of 1311230013 in words is "one billion, three hundred eleven million, two hundred thirty thousand, thirteen".