1243133353 has 16 divisors (see below), whose sum is σ = 1554232320. Its totient is φ = 965955600.

The previous prime is 1243133329. The next prime is 1243133443. The reversal of 1243133353 is 3533313421.

It is a cyclic number.

It is not a de Polignac number, because 1243133353 - 2¹⁷ = 1243002281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243133153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5158 + ... + 50128.

It is an arithmetic number, because the mean of its divisors is an integer number (97139520).

Almost surely, 2^1243133353 is an apocalyptic number.

It is an amenable number.

1243133353 is a deficient number, since it is larger than the sum of its proper divisors (311098967).

1243133353 is a wasteful number, since it uses less digits than its factorization.

1243133353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45348.

The product of its digits is 9720, while the sum is 28.

The square root of 1243133353 is about 35258.0962758910. The cubic root of 1243133353 is about 1075.2412230980.

Adding to 1243133353 its reverse (3533313421), we get a palindrome (4776446774).

The spelling of 1243133353 in words is "one billion, two hundred forty-three million, one hundred thirty-three thousand, three hundred fifty-three".