131361603320603 has 2 divisors, whose sum is σ = 131361603320604. Its totient is φ = 131361603320602.

The previous prime is 131361603320587. The next prime is 131361603320671. The reversal of 131361603320603 is 306023306163131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131361603320603 - 2⁴ = 131361603320587 is a prime.

It is not a weakly prime, because it can be changed into another prime (131361603322603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65680801660301 + 65680801660302.

It is an arithmetic number, because the mean of its divisors is an integer number (65680801660302).

Almost surely, 2^{131361603320603} is an apocalyptic number.

131361603320603 is a deficient number, since it is larger than the sum of its proper divisors (1).

131361603320603 is an equidigital number, since it uses as much as digits as its factorization.

131361603320603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 38.

Adding to 131361603320603 its reverse (306023306163131), we get a palindrome (437384909483734).

The spelling of 131361603320603 in words is "one hundred thirty-one trillion, three hundred sixty-one billion, six hundred three million, three hundred twenty thousand, six hundred three".