131403244232321 has 4 divisors (see below), whose sum is σ = 131982113149872. Its totient is φ = 130824375314772.

The previous prime is 131403244232311. The next prime is 131403244232399. The reversal of 131403244232321 is 123232442304131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131403244232321 - 2³⁸ = 131128366325377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131403244232311) 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, 289434458435 + ... + 289434458888.

It is an arithmetic number, because the mean of its divisors is an integer number (32995528287468).

Almost surely, 2^{131403244232321} is an apocalyptic number.

It is an amenable number.

131403244232321 is a deficient number, since it is larger than the sum of its proper divisors (578868917551).

131403244232321 is an equidigital number, since it uses as much as digits as its factorization.

131403244232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578868917550.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 131403244232321 its reverse (123232442304131), we get a palindrome (254635686536452).

The spelling of 131403244232321 in words is "one hundred thirty-one trillion, four hundred three billion, two hundred forty-four million, two hundred thirty-two thousand, three hundred twenty-one".