1131202243 has 2 divisors, whose sum is σ = 1131202244. Its totient is φ = 1131202242.

The previous prime is 1131202229. The next prime is 1131202249. The reversal of 1131202243 is 3422021311.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3422021311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131202243 - 2⁵ = 1131202211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131202243.

It is not a weakly prime, because it can be changed into another prime (1131202249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565601121 + 565601122.

It is an arithmetic number, because the mean of its divisors is an integer number (565601122).

Almost surely, 2^1131202243 is an apocalyptic number.

1131202243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131202243 is an equidigital number, since it uses as much as digits as its factorization.

1131202243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1131202243 is about 33633.3501602204. The cubic root of 1131202243 is about 1041.9496965854.

Adding to 1131202243 its reverse (3422021311), we get a palindrome (4553223554).

The spelling of 1131202243 in words is "one billion, one hundred thirty-one million, two hundred two thousand, two hundred forty-three".