1103431243 has 2 divisors, whose sum is σ = 1103431244. Its totient is φ = 1103431242.

The previous prime is 1103431193. The next prime is 1103431249. The reversal of 1103431243 is 3421343011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1103431243 - 2¹³ = 1103423051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103431249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551715621 + 551715622.

It is an arithmetic number, because the mean of its divisors is an integer number (551715622).

Almost surely, 2^1103431243 is an apocalyptic number.

1103431243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103431243 is an equidigital number, since it uses as much as digits as its factorization.

1103431243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1103431243 is about 33217.9355619822. The cubic root of 1103431243 is about 1033.3523358860.

Adding to 1103431243 its reverse (3421343011), we get a palindrome (4524774254).

The spelling of 1103431243 in words is "one billion, one hundred three million, four hundred thirty-one thousand, two hundred forty-three".