1011203243 has 2 divisors, whose sum is σ = 1011203244. Its totient is φ = 1011203242.

The previous prime is 1011203173. The next prime is 1011203267. The reversal of 1011203243 is 3423021101.

It is a strong prime.

It is an emirp because it is prime and its reverse (3423021101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011203243 - 2¹⁰ = 1011202219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011203273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505601621 + 505601622.

It is an arithmetic number, because the mean of its divisors is an integer number (505601622).

Almost surely, 2^1011203243 is an apocalyptic number.

1011203243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011203243 is an equidigital number, since it uses as much as digits as its factorization.

1011203243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1011203243 is about 31799.4220544965. The cubic root of 1011203243 is about 1003.7205546392.

Adding to 1011203243 its reverse (3423021101), we get a palindrome (4434224344).

The spelling of 1011203243 in words is "one billion, eleven million, two hundred three thousand, two hundred forty-three".