344404031321 has 16 divisors (see below), whose sum is σ = 394770972288. Its totient is φ = 294329376000.

The previous prime is 344404031287. The next prime is 344404031327. The reversal of 344404031321 is 123130404443.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 344404031321 - 2³⁸ = 69526124377 is a prime.

It is a super-2 number, since 2×344404031321² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (344404031327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6206726 + ... + 6261968.

It is an arithmetic number, because the mean of its divisors is an integer number (24673185768).

Almost surely, 2^344404031321 is an apocalyptic number.

It is an amenable number.

344404031321 is a deficient number, since it is larger than the sum of its proper divisors (50366940967).

344404031321 is a wasteful number, since it uses less digits than its factorization.

344404031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57872.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 344404031321 its reverse (123130404443), we get a palindrome (467534435764).

The spelling of 344404031321 in words is "three hundred forty-four billion, four hundred four million, thirty-one thousand, three hundred twenty-one".