131202303221 has 4 divisors (see below), whose sum is σ = 143129785344. Its totient is φ = 119274821100.

The previous prime is 131202303217. The next prime is 131202303229. The reversal of 131202303221 is 122303202131.

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 131202303221 - 2² = 131202303217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131202303193 and 131202303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202303229) 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 3 ways as a sum of consecutive naturals, for example, 5963741045 + ... + 5963741066.

It is an arithmetic number, because the mean of its divisors is an integer number (35782446336).

Almost surely, 2^131202303221 is an apocalyptic number.

131202303221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131202303221 is a deficient number, since it is larger than the sum of its proper divisors (11927482123).

131202303221 is a wasteful number, since it uses less digits than its factorization.

131202303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11927482122.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131202303221 its reverse (122303202131), we get a palindrome (253505505352).

The spelling of 131202303221 in words is "one hundred thirty-one billion, two hundred two million, three hundred three thousand, two hundred twenty-one".