1273723431583 has 2 divisors, whose sum is σ = 1273723431584. Its totient is φ = 1273723431582.

The previous prime is 1273723431557. The next prime is 1273723431587. The reversal of 1273723431583 is 3851343273721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1273723431583 - 2¹⁷ = 1273723300511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273723431587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636861715791 + 636861715792.

It is an arithmetic number, because the mean of its divisors is an integer number (636861715792).

Almost surely, 2^{1273723431583} is an apocalyptic number.

1273723431583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273723431583 is an equidigital number, since it uses as much as digits as its factorization.

1273723431583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 1273723431583 in words is "one trillion, two hundred seventy-three billion, seven hundred twenty-three million, four hundred thirty-one thousand, five hundred eighty-three".