538516320131 has 2 divisors, whose sum is σ = 538516320132. Its totient is φ = 538516320130.

The previous prime is 538516320103. The next prime is 538516320151. The reversal of 538516320131 is 131023615835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538516320131 is a prime.

It is a super-2 number, since 2×538516320131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538516320151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269258160065 + 269258160066.

It is an arithmetic number, because the mean of its divisors is an integer number (269258160066).

Almost surely, 2^538516320131 is an apocalyptic number.

538516320131 is a deficient number, since it is larger than the sum of its proper divisors (1).

538516320131 is an equidigital number, since it uses as much as digits as its factorization.

538516320131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

Adding to 538516320131 its reverse (131023615835), we get a palindrome (669539935966).

The spelling of 538516320131 in words is "five hundred thirty-eight billion, five hundred sixteen million, three hundred twenty thousand, one hundred thirty-one".