1243133153 has 2 divisors, whose sum is σ = 1243133154. Its totient is φ = 1243133152.

The previous prime is 1243133147. The next prime is 1243133173. The reversal of 1243133153 is 3513313421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159538704 + 83594449 = 34052^2 + 9143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243133153 - 2⁸ = 1243132897 is a prime.

It is a super-3 number, since 3×1243133153³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1243133113) 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, 621566576 + 621566577.

It is an arithmetic number, because the mean of its divisors is an integer number (621566577).

Almost surely, 2^1243133153 is an apocalyptic number.

It is an amenable number.

1243133153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243133153 is an equidigital number, since it uses as much as digits as its factorization.

1243133153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 1243133153 is about 35258.0934396629. The cubic root of 1243133153 is about 1075.2411654350.

Adding to 1243133153 its reverse (3513313421), we get a palindrome (4756446574).

The spelling of 1243133153 in words is "one billion, two hundred forty-three million, one hundred thirty-three thousand, one hundred fifty-three".