131398479343481 has 16 divisors (see below), whose sum is σ = 150190893740160. Its totient is φ = 112611367011840.

The previous prime is 131398479343463. The next prime is 131398479343513. The reversal of 131398479343481 is 184343974893131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131398479343481 is a prime.

It is a super-3 number, since 3×131398479343481³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (131398479343081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704907415 + ... + 1704984483.

It is an arithmetic number, because the mean of its divisors is an integer number (9386930858760).

Almost surely, 2^{131398479343481} is an apocalyptic number.

It is an amenable number.

131398479343481 is a deficient number, since it is larger than the sum of its proper divisors (18792414396679).

131398479343481 is a wasteful number, since it uses less digits than its factorization.

131398479343481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108304.

The product of its digits is 188116992, while the sum is 68.

The spelling of 131398479343481 in words is "one hundred thirty-one trillion, three hundred ninety-eight billion, four hundred seventy-nine million, three hundred forty-three thousand, four hundred eighty-one".