1243301133 has 16 divisors (see below), whose sum is σ = 1732026240. Its totient is φ = 791814144.

The previous prime is 1243301123. The next prime is 1243301149. The reversal of 1243301133 is 3311033421.

It is not a de Polignac number, because 1243301133 - 2²¹ = 1241203981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243301113) 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 in 15 ways as a sum of consecutive naturals, for example, 44685 + ... + 66957.

It is an arithmetic number, because the mean of its divisors is an integer number (108251640).

Almost surely, 2^1243301133 is an apocalyptic number.

It is an amenable number.

1243301133 is a deficient number, since it is larger than the sum of its proper divisors (488725107).

1243301133 is a wasteful number, since it uses less digits than its factorization.

1243301133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23108.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1243301133 is about 35260.4755072872. The cubic root of 1243301133 is about 1075.2895943786.

Adding to 1243301133 its reverse (3311033421), we get a palindrome (4554334554).

The spelling of 1243301133 in words is "one billion, two hundred forty-three million, three hundred one thousand, one hundred thirty-three".