131045335244321 has 4 divisors (see below), whose sum is σ = 131045744426052. Its totient is φ = 131044926062592.

The previous prime is 131045335244311. The next prime is 131045335244333. The reversal of 131045335244321 is 123442533540131.

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 38864002810000 + 92181332434321 = 6234100^2 + 9601111^2 .

It is a cyclic number.

It is not a de Polignac number, because 131045335244321 - 2³⁴ = 131028155375137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131045335244311) 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, 204110096 + ... + 204751121.

It is an arithmetic number, because the mean of its divisors is an integer number (32761436106513).

Almost surely, 2^{131045335244321} is an apocalyptic number.

It is an amenable number.

131045335244321 is a deficient number, since it is larger than the sum of its proper divisors (409181731).

131045335244321 is an equidigital number, since it uses as much as digits as its factorization.

131045335244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409181730.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 131045335244321 its reverse (123442533540131), we get a palindrome (254487868784452).

The spelling of 131045335244321 in words is "one hundred thirty-one trillion, forty-five billion, three hundred thirty-five million, two hundred forty-four thousand, three hundred twenty-one".