131000332223421 has 10 divisors (see below), whose sum is σ = 195691854309182. Its totient is φ = 87333554815560.

The previous prime is 131000332223401. The next prime is 131000332223429. The reversal of 131000332223421 is 124322233000131.

131000332223421 is a `hidden beast` number, since 1 + 3 + 10 + 0 + 0 + 3 + 3 + 2 + 223 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117254138276025 + 13746193947396 = 10828395^2 + 3707586^2 .

It is not a de Polignac number, because 131000332223421 - 2²¹ = 131000330126269 is a prime.

It is a super-2 number, since 2×131000332223421² (a number of 29 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000332223429) 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 9 ways as a sum of consecutive naturals, for example, 808644025990 + ... + 808644026151.

Almost surely, 2^{131000332223421} is an apocalyptic number.

It is an amenable number.

131000332223421 is a deficient number, since it is larger than the sum of its proper divisors (64691522085761).

131000332223421 is an equidigital number, since it uses as much as digits as its factorization.

131000332223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617288052153 (or 1617288052144 counting only the distinct ones).

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

Adding to 131000332223421 its reverse (124322233000131), we get a palindrome (255322565223552).

The spelling of 131000332223421 in words is "one hundred thirty-one trillion, three hundred thirty-two million, two hundred twenty-three thousand, four hundred twenty-one".