1234403331321 has 4 divisors (see below), whose sum is σ = 1645871108432. Its totient is φ = 822935554212.

The previous prime is 1234403331313. The next prime is 1234403331341. The reversal of 1234403331321 is 1231333044321.

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 1234403331321 - 2³ = 1234403331313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234403331341) 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, 205733888551 + ... + 205733888556.

It is an arithmetic number, because the mean of its divisors is an integer number (411467777108).

Almost surely, 2^{1234403331321} is an apocalyptic number.

It is an amenable number.

1234403331321 is a deficient number, since it is larger than the sum of its proper divisors (411467777111).

1234403331321 is an equidigital number, since it uses as much as digits as its factorization.

1234403331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411467777110.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 1234403331321 its reverse (1231333044321), we get a palindrome (2465736375642).

The spelling of 1234403331321 in words is "one trillion, two hundred thirty-four billion, four hundred three million, three hundred thirty-one thousand, three hundred twenty-one".