1311423551615 has 16 divisors (see below), whose sum is σ = 1598182422240. Its totient is φ = 1032842067840.

The previous prime is 1311423551587. The next prime is 1311423551621. The reversal of 1311423551615 is 5161553241131.

It is a de Polignac number, because none of the positive numbers 2^k-1311423551615 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664460 + ... + 1750529.

It is an arithmetic number, because the mean of its divisors is an integer number (99886401390).

Almost surely, 2^{1311423551615} is an apocalyptic number.

1311423551615 is a deficient number, since it is larger than the sum of its proper divisors (286758870625).

1311423551615 is a wasteful number, since it uses less digits than its factorization.

1311423551615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416682.

The product of its digits is 54000, while the sum is 38.

Adding to 1311423551615 its reverse (5161553241131), we get a palindrome (6472976792746).

The spelling of 1311423551615 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, five hundred fifty-one thousand, six hundred fifteen".