21434204104313 has 32 divisors (see below), whose sum is σ = 29448065805312. Its totient is φ = 15058669953600.

The previous prime is 21434204104277. The next prime is 21434204104373. The reversal of 21434204104313 is 31340140243412.

It is not a de Polignac number, because 21434204104313 - 2¹² = 21434204100217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21434204104313.

It is not an unprimeable number, because it can be changed into a prime (21434204104373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248942903 + ... + 249028988.

It is an arithmetic number, because the mean of its divisors is an integer number (920252056416).

Almost surely, 2^{21434204104313} is an apocalyptic number.

It is an amenable number.

21434204104313 is a deficient number, since it is larger than the sum of its proper divisors (8013861700999).

21434204104313 is a wasteful number, since it uses less digits than its factorization.

21434204104313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497971965.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21434204104313 its reverse (31340140243412), we get a palindrome (52774344347725).

The spelling of 21434204104313 in words is "twenty-one trillion, four hundred thirty-four billion, two hundred four million, one hundred four thousand, three hundred thirteen".