1543133423 has 6 divisors (see below), whose sum is σ = 1670967144. Its totient is φ = 1424430696.

The previous prime is 1543133387. The next prime is 1543133429. The reversal of 1543133423 is 3243313451.

It is not a de Polignac number, because 1543133423 - 2²⁸ = 1274697967 is a prime.

It is a super-2 number, since 2×1543133423² = 4762521522359393858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543133429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4565315 + ... + 4565652.

It is an arithmetic number, because the mean of its divisors is an integer number (278494524).

Almost surely, 2^1543133423 is an apocalyptic number.

1543133423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1543133423 is a deficient number, since it is larger than the sum of its proper divisors (127833721).

1543133423 is an equidigital number, since it uses as much as digits as its factorization.

1543133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130993 (or 9130980 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 1543133423 is about 39282.7369591275. The cubic root of 1543133423 is about 1155.5830400292.

Adding to 1543133423 its reverse (3243313451), we get a palindrome (4786446874).

The spelling of 1543133423 in words is "one billion, five hundred forty-three million, one hundred thirty-three thousand, four hundred twenty-three".