11431421000 has 64 divisors (see below), whose sum is σ = 27371710080. Its totient is φ = 4466212800.

The previous prime is 11431420963. The next prime is 11431421009. The reversal of 11431421000 is 12413411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11431421000.

It is not an unprimeable number, because it can be changed into a prime (11431421009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89924 + ... + 175923.

It is an arithmetic number, because the mean of its divisors is an integer number (427682970).

Almost surely, 2^11431421000 is an apocalyptic number.

11431421000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11431421000 is an abundant number, since it is smaller than the sum of its proper divisors (15940289080).

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

11431421000 is a wasteful number, since it uses less digits than its factorization.

11431421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265911 (or 265897 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11431421000 its reverse (12413411), we get a palindrome (11443834411).

The spelling of 11431421000 in words is "eleven billion, four hundred thirty-one million, four hundred twenty-one thousand".