7840134007831 has 2 divisors, whose sum is σ = 7840134007832. Its totient is φ = 7840134007830.

The previous prime is 7840134007711. The next prime is 7840134007859. The reversal of 7840134007831 is 1387004310487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7840134007831 - 2⁷ = 7840134007703 is a prime.

It is a super-2 number, since 2×7840134007831² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7840134007861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3920067003915 + 3920067003916.

It is an arithmetic number, because the mean of its divisors is an integer number (3920067003916).

Almost surely, 2^{7840134007831} is an apocalyptic number.

7840134007831 is a deficient number, since it is larger than the sum of its proper divisors (1).

7840134007831 is an equidigital number, since it uses as much as digits as its factorization.

7840134007831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 7840134007831 in words is "seven trillion, eight hundred forty billion, one hundred thirty-four million, seven thousand, eight hundred thirty-one".