21430340203324 has 96 divisors (see below), whose sum is σ = 41323040075520. Its totient is φ = 9664779091968.

The previous prime is 21430340203289. The next prime is 21430340203331. The reversal of 21430340203324 is 42330204303412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312374994 + ... + 312443590.

It is an arithmetic number, because the mean of its divisors is an integer number (430448334120).

Almost surely, 2^{21430340203324} is an apocalyptic number.

It is an amenable number.

21430340203324 is a deficient number, since it is larger than the sum of its proper divisors (19892699872196).

21430340203324 is a wasteful number, since it uses less digits than its factorization.

21430340203324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69479 (or 69477 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21430340203324 its reverse (42330204303412), we get a palindrome (63760544506736).

The spelling of 21430340203324 in words is "twenty-one trillion, four hundred thirty billion, three hundred forty million, two hundred three thousand, three hundred twenty-four".