131112413065421 has 2 divisors, whose sum is σ = 131112413065422. Its totient is φ = 131112413065420.

The previous prime is 131112413065369. The next prime is 131112413065429. The reversal of 131112413065421 is 124560314211131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101101617304900 + 30010795760521 = 10054930^2 + 5478211^2 .

It is a cyclic number.

It is not a de Polignac number, because 131112413065421 - 2⁶ = 131112413065357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131112413065429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65556206532710 + 65556206532711.

It is an arithmetic number, because the mean of its divisors is an integer number (65556206532711).

Almost surely, 2^{131112413065421} is an apocalyptic number.

It is an amenable number.

131112413065421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131112413065421 is an equidigital number, since it uses as much as digits as its factorization.

131112413065421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 131112413065421 its reverse (124560314211131), we get a palindrome (255672727276552).

The spelling of 131112413065421 in words is "one hundred thirty-one trillion, one hundred twelve billion, four hundred thirteen million, sixty-five thousand, four hundred twenty-one".