21343241432013 has 16 divisors (see below), whose sum is σ = 28491424503360. Its totient is φ = 14211943739136.

The previous prime is 21343241432011. The next prime is 21343241432017. The reversal of 21343241432013 is 31023414234312.

It is not a de Polignac number, because 21343241432013 - 2¹ = 21343241432011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343241432011) 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, 189396981 + ... + 189509637.

It is an arithmetic number, because the mean of its divisors is an integer number (1780714031460).

Almost surely, 2^{21343241432013} is an apocalyptic number.

It is an amenable number.

21343241432013 is a deficient number, since it is larger than the sum of its proper divisors (7148183071347).

21343241432013 is a wasteful number, since it uses less digits than its factorization.

21343241432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187036.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 21343241432013 its reverse (31023414234312), we get a palindrome (52366655666325).

The spelling of 21343241432013 in words is "twenty-one trillion, three hundred forty-three billion, two hundred forty-one million, four hundred thirty-two thousand, thirteen".