2163081406831 has 2 divisors, whose sum is σ = 2163081406832. Its totient is φ = 2163081406830.

The previous prime is 2163081406823. The next prime is 2163081406853. The reversal of 2163081406831 is 1386041803612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2163081406831 - 2³ = 2163081406823 is a prime.

It is a super-2 number, since 2×2163081406831² (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 (2163081406931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081540703415 + 1081540703416.

It is an arithmetic number, because the mean of its divisors is an integer number (1081540703416).

Almost surely, 2^{2163081406831} is an apocalyptic number.

2163081406831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163081406831 is an equidigital number, since it uses as much as digits as its factorization.

2163081406831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 2163081406831 in words is "two trillion, one hundred sixty-three billion, eighty-one million, four hundred six thousand, eight hundred thirty-one".