131303312321323 has 16 divisors (see below), whose sum is σ = 137303151939616. Its totient is φ = 125480391632640.

The previous prime is 131303312321309. The next prime is 131303312321351. The reversal of 131303312321323 is 323123213303131.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131303312321323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131303312322323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219750036 + ... + 220346737.

It is an arithmetic number, because the mean of its divisors is an integer number (8581446996226).

Almost surely, 2^{131303312321323} is an apocalyptic number.

131303312321323 is a deficient number, since it is larger than the sum of its proper divisors (5999839618293).

131303312321323 is an equidigital number, since it uses as much as digits as its factorization.

131303312321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440096974.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 131303312321323 its reverse (323123213303131), we get a palindrome (454426525624454).

The spelling of 131303312321323 in words is "one hundred thirty-one trillion, three hundred three billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty-three".