1243321341 has 4 divisors (see below), whose sum is σ = 1657761792. Its totient is φ = 828880892.

The previous prime is 1243321301. The next prime is 1243321349. The reversal of 1243321341 is 1431233421.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1431233421 = 3 ⋅477077807.

It is a cyclic number.

It is not a de Polignac number, because 1243321341 - 2⁷ = 1243321213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243321349) 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, 207220221 + ... + 207220226.

It is an arithmetic number, because the mean of its divisors is an integer number (414440448).

Almost surely, 2^1243321341 is an apocalyptic number.

It is an amenable number.

1243321341 is a deficient number, since it is larger than the sum of its proper divisors (414440451).

1243321341 is an equidigital number, since it uses as much as digits as its factorization.

1243321341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414440450.

The product of its digits is 1728, while the sum is 24.

The square root of 1243321341 is about 35260.7620592636. The cubic root of 1243321341 is about 1075.2954200883.

Adding to 1243321341 its reverse (1431233421), we get a palindrome (2674554762).

The spelling of 1243321341 in words is "one billion, two hundred forty-three million, three hundred twenty-one thousand, three hundred forty-one".