131223110321 has 8 divisors (see below), whose sum is σ = 131809127424. Its totient is φ = 130638361680.

The previous prime is 131223110311. The next prime is 131223110351. The reversal of 131223110321 is 123011322131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131223110321 - 2⁶ = 131223110257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131223110293 and 131223110302.

It is not an unprimeable number, because it can be changed into a prime (131223110311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109451 + ... + 523856.

It is an arithmetic number, because the mean of its divisors is an integer number (16476140928).

Almost surely, 2^131223110321 is an apocalyptic number.

It is an amenable number.

131223110321 is a deficient number, since it is larger than the sum of its proper divisors (586017103).

131223110321 is an equidigital number, since it uses as much as digits as its factorization.

131223110321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634231.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131223110321 its reverse (123011322131), we get a palindrome (254234432452).

The spelling of 131223110321 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, three hundred twenty-one".