1243432103203 has 4 divisors (see below), whose sum is σ = 1257403250520. Its totient is φ = 1229460955888.

The previous prime is 1243432103201. The next prime is 1243432103213. The reversal of 1243432103203 is 3023012343421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1243432103203 - 2¹ = 1243432103201 is a prime.

It is a super-2 number, since 2×1243432103203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243432103201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6985573525 + ... + 6985573702.

It is an arithmetic number, because the mean of its divisors is an integer number (314350812630).

Almost surely, 2^{1243432103203} is an apocalyptic number.

1243432103203 is a deficient number, since it is larger than the sum of its proper divisors (13971147317).

1243432103203 is an equidigital number, since it uses as much as digits as its factorization.

1243432103203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13971147316.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1243432103203 its reverse (3023012343421), we get a palindrome (4266444446624).

The spelling of 1243432103203 in words is "one trillion, two hundred forty-three billion, four hundred thirty-two million, one hundred three thousand, two hundred three".