131030312221 has 8 divisors (see below), whose sum is σ = 132123255264. Its totient is φ = 129938774160.

The previous prime is 131030312197. The next prime is 131030312239. The reversal of 131030312221 is 122213030131.

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 131030312221 - 2²⁷ = 130896094493 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 (131030312321) 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, 163530 + ... + 537403.

It is an arithmetic number, because the mean of its divisors is an integer number (16515406908).

Almost surely, 2^131030312221 is an apocalyptic number.

It is an amenable number.

131030312221 is a deficient number, since it is larger than the sum of its proper divisors (1092943043).

131030312221 is a wasteful number, since it uses less digits than its factorization.

131030312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702491.

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

Adding to 131030312221 its reverse (122213030131), we get a palindrome (253243342352).

The spelling of 131030312221 in words is "one hundred thirty-one billion, thirty million, three hundred twelve thousand, two hundred twenty-one".