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21342032321 = 192938733271
BaseRepresentation
bin10011111000000101…
…011001000111000001
32001002100210120111112
4103320011121013001
5322202030013241
613445425453105
71353606165401
oct237005310701
961070716445
1021342032321
119062025845
1241774a1195
13202173b4bc
141066628801
1584d9b01eb
hex4f81591c1

21342032321 has 8 divisors (see below), whose sum is σ = 23239963200. Its totient is φ = 19521568080.

The previous prime is 21342032317. The next prime is 21342032347. The reversal of 21342032321 is 12323024312.

Adding to 21342032321 its reverse (12323024312), we get a palindrome (33665056633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21342032321 - 22 = 21342032317 is a prime.

It is a super-3 number, since 3×213420323213 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342032381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19366085 + ... + 19367186.

It is an arithmetic number, because the mean of its divisors is an integer number (2904995400).

Almost surely, 221342032321 is an apocalyptic number.

It is an amenable number.

21342032321 is a deficient number, since it is larger than the sum of its proper divisors (1897930879).

21342032321 is a wasteful number, since it uses less digits than its factorization.

21342032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38733319.

The product of its (nonzero) digits is 1728, while the sum is 23.

The spelling of 21342032321 in words is "twenty-one billion, three hundred forty-two million, thirty-two thousand, three hundred twenty-one".

Divisors: 1 19 29 551 38733271 735932149 1123264859 21342032321