131100303221 has 4 divisors (see below), whose sum is σ = 138000319200. Its totient is φ = 124200287244.

The previous prime is 131100303193. The next prime is 131100303241. The reversal of 131100303221 is 122303001131.

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 a de Polignac number, because none of the positive numbers 2^k-131100303221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131100303221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100303241) 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, 3450007961 + ... + 3450007998.

It is an arithmetic number, because the mean of its divisors is an integer number (34500079800).

Almost surely, 2^131100303221 is an apocalyptic number.

It is an amenable number.

131100303221 is a deficient number, since it is larger than the sum of its proper divisors (6900015979).

131100303221 is an equidigital number, since it uses as much as digits as its factorization.

131100303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6900015978.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131100303221 its reverse (122303001131), we get a palindrome (253403304352).

The spelling of 131100303221 in words is "one hundred thirty-one billion, one hundred million, three hundred three thousand, two hundred twenty-one".