21431241030 has 16 divisors (see below), whose sum is σ = 51434978544. Its totient is φ = 5714997600.

The previous prime is 21431241017. The next prime is 21431241049. The reversal of 21431241030 is 3014213412.

It is a junction number, because it is equal to n+sod(n) for n = 21431240988 and 21431241006.

It is a congruent number.

It is an unprimeable number.

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, 357187321 + ... + 357187380.

It is an arithmetic number, because the mean of its divisors is an integer number (3214686159).

Almost surely, 2^21431241030 is an apocalyptic number.

21431241030 is an abundant number, since it is smaller than the sum of its proper divisors (30003737514).

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

21431241030 is a wasteful number, since it uses less digits than its factorization.

21431241030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714374711.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21431241030 its reverse (3014213412), we get a palindrome (24445454442).

The spelling of 21431241030 in words is "twenty-one billion, four hundred thirty-one million, two hundred forty-one thousand, thirty".