1204324321 has 4 divisors (see below), whose sum is σ = 1256686272. Its totient is φ = 1151962372.

The previous prime is 1204324279. The next prime is 1204324327. The reversal of 1204324321 is 1234234021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1234234021 = 7829 ⋅157649.

It is a cyclic number.

It is not a de Polignac number, because 1204324321 - 2²⁷ = 1070106593 is a prime.

It is a super-2 number, since 2×1204324321² = 2900794140304222082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1204324292 and 1204324301.

It is not an unprimeable number, because it can be changed into a prime (1204324327) 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, 26180941 + ... + 26180986.

It is an arithmetic number, because the mean of its divisors is an integer number (314171568).

Almost surely, 2^1204324321 is an apocalyptic number.

It is an amenable number.

1204324321 is a deficient number, since it is larger than the sum of its proper divisors (52361951).

1204324321 is an equidigital number, since it uses as much as digits as its factorization.

1204324321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52361950.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1204324321 is about 34703.3762190367. The cubic root of 1204324321 is about 1063.9335047224.

Adding to 1204324321 its reverse (1234234021), we get a palindrome (2438558342).

The spelling of 1204324321 in words is "one billion, two hundred four million, three hundred twenty-four thousand, three hundred twenty-one".