1234342321 has 4 divisors (see below), whose sum is σ = 1242204532. Its totient is φ = 1226480112.

The previous prime is 1234342303. The next prime is 1234342331. The reversal of 1234342321 is 1232434321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232434321 = 907 ⋅1358803.

It can be written as a sum of positive squares in 2 ways, for example, as 815730721 + 418611600 = 28561^2 + 20460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234342321 - 2²¹ = 1232245169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234342301) 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 3 ways as a sum of consecutive naturals, for example, 3930870 + ... + 3931183.

It is an arithmetic number, because the mean of its divisors is an integer number (310551133).

Almost surely, 2^1234342321 is an apocalyptic number.

It is an amenable number.

1234342321 is a deficient number, since it is larger than the sum of its proper divisors (7862211).

1234342321 is an equidigital number, since it uses as much as digits as its factorization.

1234342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862210.

The product of its digits is 3456, while the sum is 25.

The square root of 1234342321 is about 35133.2082366527. The cubic root of 1234342321 is about 1072.7006403186.

Adding to 1234342321 its reverse (1232434321), we get a palindrome (2466776642).

The spelling of 1234342321 in words is "one billion, two hundred thirty-four million, three hundred forty-two thousand, three hundred twenty-one".