1304343321 has 16 divisors (see below), whose sum is σ = 1801605120. Its totient is φ = 838521360.

The previous prime is 1304343307. The next prime is 1304343349. The reversal of 1304343321 is 1233434031.

It is not a de Polignac number, because 1304343321 - 2⁷ = 1304343193 is a prime.

It is a super-2 number, since 2×1304343321² = 3402622998074618082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1304343291 and 1304343300.

It is not an unprimeable number, because it can be changed into a prime (1304343371) 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, 1540 + ... + 51098.

It is an arithmetic number, because the mean of its divisors is an integer number (112600320).

Almost surely, 2^1304343321 is an apocalyptic number.

It is an amenable number.

1304343321 is a deficient number, since it is larger than the sum of its proper divisors (497261799).

1304343321 is a wasteful number, since it uses less digits than its factorization.

1304343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49876.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1304343321 is about 36115.6935555722. The cubic root of 1304343321 is about 1092.6069857020.

Adding to 1304343321 its reverse (1233434031), we get a palindrome (2537777352).

The spelling of 1304343321 in words is "one billion, three hundred four million, three hundred forty-three thousand, three hundred twenty-one".