1324420321 has 4 divisors (see below), whose sum is σ = 1513623232. Its totient is φ = 1135217412.

The previous prime is 1324420313. The next prime is 1324420333. The reversal of 1324420321 is 1230244231.

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: 1230244231 = 719 ⋅1711049.

It is not a de Polignac number, because 1324420321 - 2³ = 1324420313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1324420292 and 1324420301.

It is not an unprimeable number, because it can be changed into a prime (1324420301) 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, 94601445 + ... + 94601458.

It is an arithmetic number, because the mean of its divisors is an integer number (378405808).

Almost surely, 2^1324420321 is an apocalyptic number.

It is an amenable number.

1324420321 is a deficient number, since it is larger than the sum of its proper divisors (189202911).

1324420321 is an equidigital number, since it uses as much as digits as its factorization.

1324420321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189202910.

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

The square root of 1324420321 is about 36392.5860718911. The cubic root of 1324420321 is about 1098.1844212419.

Adding to 1324420321 its reverse (1230244231), we get a palindrome (2554664552).

The spelling of 1324420321 in words is "one billion, three hundred twenty-four million, four hundred twenty thousand, three hundred twenty-one".