2131543138463 has 2 divisors, whose sum is σ = 2131543138464. Its totient is φ = 2131543138462.

The previous prime is 2131543138447. The next prime is 2131543138493. The reversal of 2131543138463 is 3648313451312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131543138463 - 2⁴ = 2131543138447 is a prime.

It is a super-2 number, since 2×2131543138463² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131543138493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065771569231 + 1065771569232.

It is an arithmetic number, because the mean of its divisors is an integer number (1065771569232).

Almost surely, 2^{2131543138463} is an apocalyptic number.

2131543138463 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131543138463 is an equidigital number, since it uses as much as digits as its factorization.

2131543138463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

Adding to 2131543138463 its reverse (3648313451312), we get a palindrome (5779856589775).

The spelling of 2131543138463 in words is "two trillion, one hundred thirty-one billion, five hundred forty-three million, one hundred thirty-eight thousand, four hundred sixty-three".