1321404324 has 24 divisors (see below), whose sum is σ = 3245555040. Its totient is φ = 417285504.

The previous prime is 1321404299. The next prime is 1321404431. The reversal of 1321404324 is 4234041231.

It is a super-2 number, since 2×1321404324² = 3492218774971793952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321404294 and 1321404303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2897589 + ... + 2898044.

It is an arithmetic number, because the mean of its divisors is an integer number (135231460).

Almost surely, 2^1321404324 is an apocalyptic number.

It is an amenable number.

1321404324 is an abundant number, since it is smaller than the sum of its proper divisors (1924150716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321404324 is a wasteful number, since it uses less digits than its factorization.

1321404324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795659 (or 5795657 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1321404324 is about 36351.1254846394. The cubic root of 1321404324 is about 1097.3501850114.

Adding to 1321404324 its reverse (4234041231), we get a palindrome (5555445555).

The spelling of 1321404324 in words is "one billion, three hundred twenty-one million, four hundred four thousand, three hundred twenty-four".