1311504111125 has 64 divisors (see below), whose sum is σ = 1852538688000. Its totient is φ = 919718553600.

The previous prime is 1311504111121. The next prime is 1311504111143. The reversal of 1311504111125 is 5211114051131.

It is a happy number.

It is not a de Polignac number, because 1311504111125 - 2² = 1311504111121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311504111094 and 1311504111103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311504111121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5068901 + ... + 5321349.

It is an arithmetic number, because the mean of its divisors is an integer number (28945917000).

Almost surely, 2^{1311504111125} is an apocalyptic number.

It is an amenable number.

1311504111125 is a deficient number, since it is larger than the sum of its proper divisors (541034576875).

1311504111125 is a wasteful number, since it uses less digits than its factorization.

1311504111125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252639 (or 252629 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 26.

Adding to 1311504111125 its reverse (5211114051131), we get a palindrome (6522618162256).

The spelling of 1311504111125 in words is "one trillion, three hundred eleven billion, five hundred four million, one hundred eleven thousand, one hundred twenty-five".