131022022321 has 8 divisors (see below), whose sum is σ = 134370760104. Its totient is φ = 127680574080.

The previous prime is 131022022297. The next prime is 131022022409. The reversal of 131022022321 is 123220220131.

It can be written as a sum of positive squares in 4 ways, for example, as 24354225 + 130997668096 = 4935^2 + 361936^2 .

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 131022022321 - 2⁵ = 131022022289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131022022421) 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, 1785970 + ... + 1857883.

It is an arithmetic number, because the mean of its divisors is an integer number (16796345013).

Almost surely, 2^131022022321 is an apocalyptic number.

It is an amenable number.

131022022321 is a deficient number, since it is larger than the sum of its proper divisors (3348737783).

131022022321 is an equidigital number, since it uses as much as digits as its factorization.

131022022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644771.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 131022022321 its reverse (123220220131), we get a palindrome (254242242452).

The spelling of 131022022321 in words is "one hundred thirty-one billion, twenty-two million, twenty-two thousand, three hundred twenty-one".