1311020003005 has 8 divisors (see below), whose sum is σ = 1582012965600. Its totient is φ = 1042956694416.

The previous prime is 1311020002937. The next prime is 1311020003057. The reversal of 1311020003005 is 5003000201131.

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 1311020003005 - 2²¹ = 1311017905853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311020003005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732412515 + ... + 732414304.

It is an arithmetic number, because the mean of its divisors is an integer number (197751620700).

Almost surely, 2^{1311020003005} is an apocalyptic number.

It is an amenable number.

1311020003005 is a deficient number, since it is larger than the sum of its proper divisors (270992962595).

1311020003005 is a wasteful number, since it uses less digits than its factorization.

1311020003005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464827003.

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 1311020003005 its reverse (5003000201131), we get a palindrome (6314020204136).

The spelling of 1311020003005 in words is "one trillion, three hundred eleven billion, twenty million, three thousand, five".