3131165612243 has 4 divisors (see below), whose sum is σ = 3134711667048. Its totient is φ = 3127619557440.

The previous prime is 3131165612213. The next prime is 3131165612269. The reversal of 3131165612243 is 3422165611313.

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 3131165612243 - 2²⁴ = 3131148835027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131165612197 and 3131165612206.

It is not an unprimeable number, because it can be changed into a prime (3131165612213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773026078 + ... + 1773027843.

It is an arithmetic number, because the mean of its divisors is an integer number (783677916762).

Almost surely, 2^{3131165612243} is an apocalyptic number.

3131165612243 is a deficient number, since it is larger than the sum of its proper divisors (3546054805).

3131165612243 is an equidigital number, since it uses as much as digits as its factorization.

3131165612243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546054804.

The product of its digits is 77760, while the sum is 38.

The spelling of 3131165612243 in words is "three trillion, one hundred thirty-one billion, one hundred sixty-five million, six hundred twelve thousand, two hundred forty-three".