131000344303221 has 32 divisors (see below), whose sum is σ = 199321666790400. Its totient is φ = 84972418873920.

The previous prime is 131000344303187. The next prime is 131000344303247. The reversal of 131000344303221 is 122303443000131.

It is a happy number.

131000344303221 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 0 + 0 + 3 + 4 + 430 + 3 + 221 = 666.

It is not a de Polignac number, because 131000344303221 - 2¹⁰ = 131000344302197 is a prime.

It is a super-3 number, since 3×131000344303221³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000344323221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120970315 + ... + 122048423.

It is an arithmetic number, because the mean of its divisors is an integer number (6228802087200).

Almost surely, 2^{131000344303221} is an apocalyptic number.

It is an amenable number.

131000344303221 is a deficient number, since it is larger than the sum of its proper divisors (68321322487179).

131000344303221 is a wasteful number, since it uses less digits than its factorization.

131000344303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199786 (or 1199780 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131000344303221 its reverse (122303443000131), we get a palindrome (253303787303352).

The spelling of 131000344303221 in words is "one hundred thirty-one trillion, three hundred forty-four million, three hundred three thousand, two hundred twenty-one".