131443412311521 has 12 divisors (see below), whose sum is σ = 189863008358400. Its totient is φ = 87628802301240.

The previous prime is 131443412311511. The next prime is 131443412311529. The reversal of 131443412311521 is 125113214344131.

131443412311521 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 4 + 3 + 4 + 123 + 1 + 1 + 521 = 666.

It is not a de Polignac number, because 131443412311521 - 2¹⁷ = 131443412180449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131443412311529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5453025 + ... + 17106206.

It is an arithmetic number, because the mean of its divisors is an integer number (15821917363200).

Almost surely, 2^{131443412311521} is an apocalyptic number.

It is an amenable number.

131443412311521 is a deficient number, since it is larger than the sum of its proper divisors (58419596046879).

131443412311521 is a wasteful number, since it uses less digits than its factorization.

131443412311521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23206636 (or 23206633 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

Adding to 131443412311521 its reverse (125113214344131), we get a palindrome (256556626655652).

The spelling of 131443412311521 in words is "one hundred thirty-one trillion, four hundred forty-three billion, four hundred twelve million, three hundred eleven thousand, five hundred twenty-one".