131331420442503 has 24 divisors (see below), whose sum is σ = 190129259086416. Its totient is φ = 87356811753600.

The previous prime is 131331420442501. The next prime is 131331420442639. The reversal of 131331420442503 is 305244024133131.

131331420442503 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 3 + 142 + 0 + 4 + 4 + 2 + 503 = 666.

It is not a de Polignac number, because 131331420442503 - 2¹ = 131331420442501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131331420442501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1769625 + ... + 16303202.

It is an arithmetic number, because the mean of its divisors is an integer number (7922052461934).

Almost surely, 2^{131331420442503} is an apocalyptic number.

131331420442503 is a deficient number, since it is larger than the sum of its proper divisors (58797838643913).

131331420442503 is a wasteful number, since it uses less digits than its factorization.

131331420442503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18074655 (or 18074652 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 131331420442503 its reverse (305244024133131), we get a palindrome (436575444575634).

The spelling of 131331420442503 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, four hundred twenty million, four hundred forty-two thousand, five hundred three".