1321434430 has 16 divisors (see below), whose sum is σ = 2399633424. Its totient is φ = 523895680.

The previous prime is 1321434407. The next prime is 1321434431. The reversal of 1321434430 is 344341231.

It is a junction number, because it is equal to n+sod(n) for n = 1321434395 and 1321434404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321434431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583576 + ... + 585835.

It is an arithmetic number, because the mean of its divisors is an integer number (149977089).

Almost surely, 2^1321434430 is an apocalyptic number.

1321434430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321434430 is a deficient number, since it is larger than the sum of its proper divisors (1078198994).

1321434430 is a wasteful number, since it uses less digits than its factorization.

1321434430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169531.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1321434430 is about 36351.5395822515. The cubic root of 1321434430 is about 1097.3585187145.

Adding to 1321434430 its reverse (344341231), we get a palindrome (1665775661).

The spelling of 1321434430 in words is "one billion, three hundred twenty-one million, four hundred thirty-four thousand, four hundred thirty".