1323420320 has 24 divisors (see below), whose sum is σ = 3126580884. Its totient is φ = 529368064.

The previous prime is 1323420317. The next prime is 1323420337. The reversal of 1323420320 is 230243231.

It can be written as a sum of positive squares in 2 ways, for example, as 1191354256 + 132066064 = 34516^2 + 11492^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1323420292 and 1323420301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4135529 + ... + 4135848.

Almost surely, 2^1323420320 is an apocalyptic number.

1323420320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323420320 is an abundant number, since it is smaller than the sum of its proper divisors (1803160564).

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

1323420320 is an equidigital number, since it uses as much as digits as its factorization.

1323420320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271392 (or 8271384 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1323420320 is about 36378.8444016574. The cubic root of 1323420320 is about 1097.9079576419.

Adding to 1323420320 its reverse (230243231), we get a palindrome (1553663551).

The spelling of 1323420320 in words is "one billion, three hundred twenty-three million, four hundred twenty thousand, three hundred twenty".