131000030143221 has 4 divisors (see below), whose sum is σ = 174666706857632. Its totient is φ = 87333353428812.

The previous prime is 131000030143217. The next prime is 131000030143273. The reversal of 131000030143221 is 122341030000131.

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 not a de Polignac number, because 131000030143221 - 2² = 131000030143217 is a prime.

It is a super-2 number, since 2×131000030143221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000030143211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21833338357201 + ... + 21833338357206.

It is an arithmetic number, because the mean of its divisors is an integer number (43666676714408).

Almost surely, 2^{131000030143221} is an apocalyptic number.

It is an amenable number.

131000030143221 is a deficient number, since it is larger than the sum of its proper divisors (43666676714411).

131000030143221 is an equidigital number, since it uses as much as digits as its factorization.

131000030143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43666676714410.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131000030143221 its reverse (122341030000131), we get a palindrome (253341060143352).

The spelling of 131000030143221 in words is "one hundred thirty-one trillion, thirty million, one hundred forty-three thousand, two hundred twenty-one".