131312100411421 has 4 divisors (see below), whose sum is σ = 131336722974492. Its totient is φ = 131287477848352.

The previous prime is 131312100411419. The next prime is 131312100411491. The reversal of 131312100411421 is 124114001213131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129708295992025 + 1603804419396 = 11388955^2 + 1266414^2 .

It is a cyclic number.

It is not a de Polignac number, because 131312100411421 - 2¹ = 131312100411419 is a prime.

It is a super-3 number, since 3×131312100411421³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312100411491) 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, 12311273536 + ... + 12311284201.

It is an arithmetic number, because the mean of its divisors is an integer number (32834180743623).

Almost surely, 2^{131312100411421} is an apocalyptic number.

It is an amenable number.

131312100411421 is a deficient number, since it is larger than the sum of its proper divisors (24622563071).

131312100411421 is an equidigital number, since it uses as much as digits as its factorization.

131312100411421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24622563070.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 131312100411421 its reverse (124114001213131), we get a palindrome (255426101624552).

The spelling of 131312100411421 in words is "one hundred thirty-one trillion, three hundred twelve billion, one hundred million, four hundred eleven thousand, four hundred twenty-one".