1321230430 has 32 divisors (see below), whose sum is σ = 2649477600. Its totient is φ = 471015552.

The previous prime is 1321230397. The next prime is 1321230433. The reversal of 1321230430 is 340321231.

It is a junction number, because it is equal to n+sod(n) for n = 1321230398 and 1321230407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321230433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171460 + ... + 178999.

It is an arithmetic number, because the mean of its divisors is an integer number (82796175).

Almost surely, 2^1321230430 is an apocalyptic number.

1321230430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321230430 is an abundant number, since it is smaller than the sum of its proper divisors (1328247170).

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

1321230430 is a wasteful number, since it uses less digits than its factorization.

1321230430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350508.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1321230430 is about 36348.7335405238. The cubic root of 1321230430 is about 1097.3020465825.

Adding to 1321230430 its reverse (340321231), we get a palindrome (1661551661).

The spelling of 1321230430 in words is "one billion, three hundred twenty-one million, two hundred thirty thousand, four hundred thirty".