131303122020643 has 2 divisors, whose sum is σ = 131303122020644. Its totient is φ = 131303122020642.

The previous prime is 131303122020613. The next prime is 131303122020659. The reversal of 131303122020643 is 346020221303131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (346020221303131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131303122020643 - 2²⁹ = 131302585149731 is a prime.

It is not a weakly prime, because it can be changed into another prime (131303122020613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65651561010321 + 65651561010322.

It is an arithmetic number, because the mean of its divisors is an integer number (65651561010322).

Almost surely, 2^{131303122020643} is an apocalyptic number.

131303122020643 is a deficient number, since it is larger than the sum of its proper divisors (1).

131303122020643 is an equidigital number, since it uses as much as digits as its factorization.

131303122020643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131303122020643 its reverse (346020221303131), we get a palindrome (477323343323774).

The spelling of 131303122020643 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred twenty-two million, twenty thousand, six hundred forty-three".