21312013453414 has 16 divisors (see below), whose sum is σ = 31988962495152. Its totient is φ = 10649027477088.

The previous prime is 21312013453387. The next prime is 21312013453447. The reversal of 21312013453414 is 41435431021312.

It is a self number, because there is not a number n which added to its sum of digits gives 21312013453414.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27973497 + ... + 28725259.

It is an arithmetic number, because the mean of its divisors is an integer number (1999310155947).

Almost surely, 2^{21312013453414} is an apocalyptic number.

21312013453414 is a deficient number, since it is larger than the sum of its proper divisors (10676949041738).

21312013453414 is a wasteful number, since it uses less digits than its factorization.

21312013453414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761031.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 21312013453414 its reverse (41435431021312), we get a palindrome (62747444474726).

The spelling of 21312013453414 in words is "twenty-one trillion, three hundred twelve billion, thirteen million, four hundred fifty-three thousand, four hundred fourteen".