1311626317 has 8 divisors (see below), whose sum is σ = 1321214400. Its totient is φ = 1302050400.

The previous prime is 1311626311. The next prime is 1311626339. The reversal of 1311626317 is 7136261131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311626317 - 2⁷ = 1311626189 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 (1311626311) 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, 395934 + ... + 399232.

It is an arithmetic number, because the mean of its divisors is an integer number (165151800).

Almost surely, 2^1311626317 is an apocalyptic number.

It is an amenable number.

1311626317 is a deficient number, since it is larger than the sum of its proper divisors (9588083).

1311626317 is a wasteful number, since it uses less digits than its factorization.

1311626317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its digits is 4536, while the sum is 31.

The square root of 1311626317 is about 36216.3818872068. The cubic root of 1311626317 is about 1094.6367906389.

Adding to 1311626317 its reverse (7136261131), we get a palindrome (8447887448).

The spelling of 1311626317 in words is "one billion, three hundred eleven million, six hundred twenty-six thousand, three hundred seventeen".