1243432203 has 12 divisors (see below), whose sum is σ = 1795251960. Its totient is φ = 765188736.

The previous prime is 1243432189. The next prime is 1243432231. The reversal of 1243432203 is 3022343421.

It is not a de Polignac number, because 1243432203 - 2¹² = 1243428107 is a prime.

It is a super-2 number, since 2×1243432203² = 3092247286914866418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243432273) 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 11 ways as a sum of consecutive naturals, for example, 1225758 + ... + 1226771.

It is an arithmetic number, because the mean of its divisors is an integer number (149604330).

Almost surely, 2^1243432203 is an apocalyptic number.

1243432203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1243432203 is a deficient number, since it is larger than the sum of its proper divisors (551819757).

1243432203 is a wasteful number, since it uses less digits than its factorization.

1243432203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452558 (or 2452545 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 1243432203 is about 35262.3340549091. The cubic root of 1243432203 is about 1075.3273790716.

Adding to 1243432203 its reverse (3022343421), we get a palindrome (4265775624).

The spelling of 1243432203 in words is "one billion, two hundred forty-three million, four hundred thirty-two thousand, two hundred three".