3131143143145 has 8 divisors (see below), whose sum is σ = 3759201970056. Its totient is φ = 2503694382336.

The previous prime is 3131143143101. The next prime is 3131143143169. The reversal of 3131143143145 is 5413413411313.

It can be written as a sum of positive squares in 4 ways, for example, as 4997358864 + 3126145784281 = 70692^2 + 1768091^2 .

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 3131143143145 - 2⁴¹ = 932119887593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131143143145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152505232 + ... + 152525761.

It is an arithmetic number, because the mean of its divisors is an integer number (469900246257).

Almost surely, 2^{3131143143145} is an apocalyptic number.

It is an amenable number.

3131143143145 is a deficient number, since it is larger than the sum of its proper divisors (628058826911).

3131143143145 is a wasteful number, since it uses less digits than its factorization.

3131143143145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305033051.

The product of its digits is 25920, while the sum is 34.

Adding to 3131143143145 its reverse (5413413411313), we get a palindrome (8544556554458).

The spelling of 3131143143145 in words is "three trillion, one hundred thirty-one billion, one hundred forty-three million, one hundred forty-three thousand, one hundred forty-five".