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21313220311303 = 191121748437437
BaseRepresentation
bin1001101100010010111101…
…11011001111100100000111
32210110112010222011100122021
410312021132323033210013
510243143433344430203
6113155054102544011
74326554316342034
oct466113673174407
983415128140567
1021313220311303
11687798225a838
12248278a438007
13bb7a9c2c918b
145397cb52038b
1526e61472a5bd
hex13625eecf907

21313220311303 has 4 divisors (see below), whose sum is σ = 22434968748760. Its totient is φ = 20191471873848.

The previous prime is 21313220311247. The next prime is 21313220311333. The reversal of 21313220311303 is 30311302231312.

Adding to 21313220311303 its reverse (30311302231312), we get a palindrome (51624522542615).

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2k-21313220311303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313220311333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560874218700 + ... + 560874218737.

It is an arithmetic number, because the mean of its divisors is an integer number (5608742187190).

Almost surely, 221313220311303 is an apocalyptic number.

21313220311303 is a deficient number, since it is larger than the sum of its proper divisors (1121748437457).

21313220311303 is a wasteful number, since it uses less digits than its factorization.

21313220311303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121748437456.

The product of its (nonzero) digits is 1944, while the sum is 25.

The spelling of 21313220311303 in words is "twenty-one trillion, three hundred thirteen billion, two hundred twenty million, three hundred eleven thousand, three hundred three".

Divisors: 1 19 1121748437437 21313220311303