2243400331321 has 4 divisors (see below), whose sum is σ = 2291132253312. Its totient is φ = 2195668409332.

The previous prime is 2243400331283. The next prime is 2243400331327. The reversal of 2243400331321 is 1231330043422.

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.

It is a cyclic number.

It is not a de Polignac number, because 2243400331321 - 2¹⁵ = 2243400298553 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 2243400331321.

It is not an unprimeable number, because it can be changed into a prime (2243400331327) 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, 23865960925 + ... + 23865961018.

It is an arithmetic number, because the mean of its divisors is an integer number (572783063328).

Almost surely, 2^{2243400331321} is an apocalyptic number.

It is an amenable number.

2243400331321 is a deficient number, since it is larger than the sum of its proper divisors (47731921991).

2243400331321 is an equidigital number, since it uses as much as digits as its factorization.

2243400331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47731921990.

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

Adding to 2243400331321 its reverse (1231330043422), we get a palindrome (3474730374743).

The spelling of 2243400331321 in words is "two trillion, two hundred forty-three billion, four hundred million, three hundred thirty-one thousand, three hundred twenty-one".