131023130221 has 8 divisors (see below), whose sum is σ = 131162308920. Its totient is φ = 130884003072.

The previous prime is 131023130209. The next prime is 131023130243. The reversal of 131023130221 is 122031320131.

It can be written as a sum of positive squares in 4 ways, for example, as 13040498025 + 117982632196 = 114195^2 + 343486^2 .

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 131023130221 - 2⁷ = 131023130093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023130291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6992361 + ... + 7011073.

It is an arithmetic number, because the mean of its divisors is an integer number (16395288615).

Almost surely, 2^131023130221 is an apocalyptic number.

It is an amenable number.

131023130221 is a deficient number, since it is larger than the sum of its proper divisors (139178699).

131023130221 is a wasteful number, since it uses less digits than its factorization.

131023130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25775.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131023130221 its reverse (122031320131), we get a palindrome (253054450352).

The spelling of 131023130221 in words is "one hundred thirty-one billion, twenty-three million, one hundred thirty thousand, two hundred twenty-one".