3131242054513 has 4 divisors (see below), whose sum is σ = 3315432763620. Its totient is φ = 2947051345408.

The previous prime is 3131242054487. The next prime is 3131242054517. The reversal of 3131242054513 is 3154502421313.

3131242054513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2912374338624 + 218867715889 = 1706568^2 + 467833^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131242054513 - 2⁵ = 3131242054481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131242054517) 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, 92095354528 + ... + 92095354561.

It is an arithmetic number, because the mean of its divisors is an integer number (828858190905).

Almost surely, 2^{3131242054513} is an apocalyptic number.

It is an amenable number.

3131242054513 is a deficient number, since it is larger than the sum of its proper divisors (184190709107).

3131242054513 is a wasteful number, since it uses less digits than its factorization.

3131242054513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184190709106.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 3131242054513 its reverse (3154502421313), we get a palindrome (6285744475826).

The spelling of 3131242054513 in words is "three trillion, one hundred thirty-one billion, two hundred forty-two million, fifty-four thousand, five hundred thirteen".