131000304323421 has 48 divisors (see below), whose sum is σ = 204516759366192. Its totient is φ = 80323635225600.

The previous prime is 131000304323417. The next prime is 131000304323431. The reversal of 131000304323421 is 124323403000131.

It is a happy number.

131000304323421 is a `hidden beast` number, since 1 + 3 + 10 + 0 + 0 + 304 + 3 + 2 + 342 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 42047300703321 + 88953003620100 = 6484389^2 + 9431490^2 .

It is not a de Polignac number, because 131000304323421 - 2² = 131000304323417 is a prime.

It is a super-2 number, since 2×131000304323421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000304323431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84965731 + ... + 86493791.

It is an arithmetic number, because the mean of its divisors is an integer number (4260765820129).

Almost surely, 2^{131000304323421} is an apocalyptic number.

It is an amenable number.

131000304323421 is a deficient number, since it is larger than the sum of its proper divisors (73516455042771).

131000304323421 is a wasteful number, since it uses less digits than its factorization.

131000304323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530734 (or 1530731 counting only the distinct ones).

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

Adding to 131000304323421 its reverse (124323403000131), we get a palindrome (255323707323552).

The spelling of 131000304323421 in words is "one hundred thirty-one trillion, three hundred four million, three hundred twenty-three thousand, four hundred twenty-one".