131131202120323 has 2 divisors, whose sum is σ = 131131202120324. Its totient is φ = 131131202120322.

The previous prime is 131131202120311. The next prime is 131131202120357. The reversal of 131131202120323 is 323021202131131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131131202120323 - 2⁹ = 131131202119811 is a prime.

It is not a weakly prime, because it can be changed into another prime (131131202120923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65565601060161 + 65565601060162.

It is an arithmetic number, because the mean of its divisors is an integer number (65565601060162).

Almost surely, 2^{131131202120323} is an apocalyptic number.

131131202120323 is a deficient number, since it is larger than the sum of its proper divisors (1).

131131202120323 is an equidigital number, since it uses as much as digits as its factorization.

131131202120323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 131131202120323 its reverse (323021202131131), we get a palindrome (454152404251454).

The spelling of 131131202120323 in words is "one hundred thirty-one trillion, one hundred thirty-one billion, two hundred two million, one hundred twenty thousand, three hundred twenty-three".