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21313420411 = 191723965071
BaseRepresentation
bin10011110110011000…
…001111110001111011
32001000100221221100011
4103312120033301323
5322122213423121
613442524322351
71353111040633
oct236630176173
961010857304
1021313420411
119047963238
1241699a33b7
13201883128a
1410628db6c3
1584b20c7e1
hex4f660fc7b

21313420411 has 8 divisors (see below), whose sum is σ = 22436825600. Its totient is φ = 20190179880.

The previous prime is 21313420409. The next prime is 21313420441. The reversal of 21313420411 is 11402431312.

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

It is a cyclic number.

It is not a de Polignac number, because 21313420411 - 21 = 21313420409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313420441) 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, 295006 + ... + 360076.

It is an arithmetic number, because the mean of its divisors is an integer number (2804603200).

Almost surely, 221313420411 is an apocalyptic number.

21313420411 is a deficient number, since it is larger than the sum of its proper divisors (1123405189).

21313420411 is a wasteful number, since it uses less digits than its factorization.

21313420411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82329.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21313420411 its reverse (11402431312), we get a palindrome (32715851723).

The spelling of 21313420411 in words is "twenty-one billion, three hundred thirteen million, four hundred twenty thousand, four hundred eleven".

Divisors: 1 19 17239 65071 327541 1236349 1121758969 21313420411