1323230420 has 12 divisors (see below), whose sum is σ = 2778783924. Its totient is φ = 529292160.

The previous prime is 1323230413. The next prime is 1323230423. The reversal of 1323230420 is 240323231.

1323230420 = 3261² + 3262² + ... + 3380².

It can be written as a sum of positive squares in 2 ways, for example, as 650658064 + 672572356 = 25508^2 + 25934^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 66161521 = 1323230420 / (1 + 3 + 2 + 3 + 2 + 3 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1323230392 and 1323230401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323230423) 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, 33080741 + ... + 33080780.

It is an arithmetic number, because the mean of its divisors is an integer number (231565327).

Almost surely, 2^1323230420 is an apocalyptic number.

1323230420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323230420 is an abundant number, since it is smaller than the sum of its proper divisors (1455553504).

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

1323230420 is a wasteful number, since it uses less digits than its factorization.

1323230420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66161530 (or 66161528 counting only the distinct ones).

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

The square root of 1323230420 is about 36376.2342745920. The cubic root of 1323230420 is about 1097.8554415236.

Adding to 1323230420 its reverse (240323231), we get a palindrome (1563553651).

The spelling of 1323230420 in words is "one billion, three hundred twenty-three million, two hundred thirty thousand, four hundred twenty".