1103243161 has 2 divisors, whose sum is σ = 1103243162. Its totient is φ = 1103243160.

The previous prime is 1103243153. The next prime is 1103243209. The reversal of 1103243161 is 1613423011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740112025 + 363131136 = 27205^2 + 19056^2 .

It is an emirp because it is prime and its reverse (1613423011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103243161 - 2³ = 1103243153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103243111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551621580 + 551621581.

It is an arithmetic number, because the mean of its divisors is an integer number (551621581).

Almost surely, 2^1103243161 is an apocalyptic number.

It is an amenable number.

1103243161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103243161 is an equidigital number, since it uses as much as digits as its factorization.

1103243161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1103243161 is about 33215.1044104937. The cubic root of 1103243161 is about 1033.2936202451.

Adding to 1103243161 its reverse (1613423011), we get a palindrome (2716666172).

The spelling of 1103243161 in words is "one billion, one hundred three million, two hundred forty-three thousand, one hundred sixty-one".