11421431430 has 32 divisors (see below), whose sum is σ = 28854144000. Its totient is φ = 2885414112.

The previous prime is 11421431387. The next prime is 11421431443. The reversal of 11421431430 is 3413412411.

It is a self number, because there is not a number n which added to its sum of digits gives 11421431430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10018230 + ... + 10019369.

It is an arithmetic number, because the mean of its divisors is an integer number (901692000).

Almost surely, 2^11421431430 is an apocalyptic number.

11421431430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11421431430 is an abundant number, since it is smaller than the sum of its proper divisors (17432712570).

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

11421431430 is a wasteful number, since it uses less digits than its factorization.

11421431430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037628.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11421431430 its reverse (3413412411), we get a palindrome (14834843841).

The spelling of 11421431430 in words is "eleven billion, four hundred twenty-one million, four hundred thirty-one thousand, four hundred thirty".