131020321043 has 2 divisors, whose sum is σ = 131020321044. Its totient is φ = 131020321042.

The previous prime is 131020320989. The next prime is 131020321093. The reversal of 131020321043 is 340123020131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131020321043 - 2⁶ = 131020320979 is a prime.

It is not a weakly prime, because it can be changed into another prime (131020321093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510160521 + 65510160522.

It is an arithmetic number, because the mean of its divisors is an integer number (65510160522).

Almost surely, 2^131020321043 is an apocalyptic number.

131020321043 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020321043 is an equidigital number, since it uses as much as digits as its factorization.

131020321043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131020321043 its reverse (340123020131), we get a palindrome (471143341174).

The spelling of 131020321043 in words is "one hundred thirty-one billion, twenty million, three hundred twenty-one thousand, forty-three".