1243003413 has 4 divisors (see below), whose sum is σ = 1657337888. Its totient is φ = 828668940.

The previous prime is 1243003403. The next prime is 1243003417. The reversal of 1243003413 is 3143003421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1243003413 - 2¹⁰ = 1243002389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1243003413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243003417) 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, 207167233 + ... + 207167238.

It is an arithmetic number, because the mean of its divisors is an integer number (414334472).

Almost surely, 2^1243003413 is an apocalyptic number.

It is an amenable number.

1243003413 is a deficient number, since it is larger than the sum of its proper divisors (414334475).

1243003413 is an equidigital number, since it uses as much as digits as its factorization.

1243003413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414334474.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1243003413 is about 35256.2535304022. The cubic root of 1243003413 is about 1075.2037581678.

Adding to 1243003413 its reverse (3143003421), we get a palindrome (4386006834).

The spelling of 1243003413 in words is "one billion, two hundred forty-three million, three thousand, four hundred thirteen".