42731173103 has 2 divisors, whose sum is σ = 42731173104. Its totient is φ = 42731173102.

The previous prime is 42731173081. The next prime is 42731173117. The reversal of 42731173103 is 30137113724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42731173103 - 2¹⁰ = 42731172079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42731173103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42731173183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365586551 + 21365586552.

It is an arithmetic number, because the mean of its divisors is an integer number (21365586552).

Almost surely, 2^42731173103 is an apocalyptic number.

42731173103 is a deficient number, since it is larger than the sum of its proper divisors (1).

42731173103 is an equidigital number, since it uses as much as digits as its factorization.

42731173103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 32.

Adding to 42731173103 its reverse (30137113724), we get a palindrome (72868286827).

The spelling of 42731173103 in words is "forty-two billion, seven hundred thirty-one million, one hundred seventy-three thousand, one hundred three".