131351420032321 has 2 divisors, whose sum is σ = 131351420032322. Its totient is φ = 131351420032320.

The previous prime is 131351420032249. The next prime is 131351420032463. The reversal of 131351420032321 is 123230024153131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127418492480400 + 3932927551921 = 11287980^2 + 1983161^2 .

It is a cyclic number.

It is not a de Polignac number, because 131351420032321 - 2¹³ = 131351420024129 is a prime.

It is not a weakly prime, because it can be changed into another prime (131351420033321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65675710016160 + 65675710016161.

It is an arithmetic number, because the mean of its divisors is an integer number (65675710016161).

Almost surely, 2^{131351420032321} is an apocalyptic number.

It is an amenable number.

131351420032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

131351420032321 is an equidigital number, since it uses as much as digits as its factorization.

131351420032321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 131351420032321 its reverse (123230024153131), we get a palindrome (254581444185452).

The spelling of 131351420032321 in words is "one hundred thirty-one trillion, three hundred fifty-one billion, four hundred twenty million, thirty-two thousand, three hundred twenty-one".