131223411452321 has 4 divisors (see below), whose sum is σ = 131225728756500. Its totient is φ = 131221094148144.

The previous prime is 131223411452281. The next prime is 131223411452359. The reversal of 131223411452321 is 123254114322131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78511295635600 + 52712115816721 = 8860660^2 + 7260311^2 .

It is a cyclic number.

It is not a de Polignac number, because 131223411452321 - 2³⁸ = 130948533545377 is a prime.

It is a super-3 number, since 3×131223411452321³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131223471452321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158567146 + ... + 1158680403.

It is an arithmetic number, because the mean of its divisors is an integer number (32806432189125).

Almost surely, 2^{131223411452321} is an apocalyptic number.

It is an amenable number.

131223411452321 is a deficient number, since it is larger than the sum of its proper divisors (2317304179).

131223411452321 is an equidigital number, since it uses as much as digits as its factorization.

131223411452321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317304178.

The product of its digits is 34560, while the sum is 35.

Adding to 131223411452321 its reverse (123254114322131), we get a palindrome (254477525774452).

The spelling of 131223411452321 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, four hundred eleven million, four hundred fifty-two thousand, three hundred twenty-one".