1311924515939 has 4 divisors (see below), whose sum is σ = 1312840026456. Its totient is φ = 1311009005424.

The previous prime is 1311924515921. The next prime is 1311924515971. The reversal of 1311924515939 is 9395154291131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311924515939 - 2²⁰ = 1311923467363 is a prime.

It is a super-2 number, since 2×1311924515939² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311924515039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457753109 + ... + 457755974.

It is an arithmetic number, because the mean of its divisors is an integer number (328210006614).

Almost surely, 2^{1311924515939} is an apocalyptic number.

1311924515939 is a deficient number, since it is larger than the sum of its proper divisors (915510517).

1311924515939 is an equidigital number, since it uses as much as digits as its factorization.

1311924515939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915510516.

The product of its digits is 1312200, while the sum is 53.

The spelling of 1311924515939 in words is "one trillion, three hundred eleven billion, nine hundred twenty-four million, five hundred fifteen thousand, nine hundred thirty-nine".