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13220103223 = 43307444261
BaseRepresentation
bin11000100111111101…
…01100010000110111
31021010022221211022201
430103332230100313
5204033321300343
610023452405331
7645415010665
oct142376542067
937108854281
1013220103223
115674449248
12268b476847
131328b773b2
148d5aa1c35
1552592c94d
hex313fac437

13220103223 has 4 divisors (see below), whose sum is σ = 13527547528. Its totient is φ = 12912658920.

The previous prime is 13220103217. The next prime is 13220103257. The reversal of 13220103223 is 32230102231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32230102231 = 122892622679.

It is a cyclic number.

It is not a de Polignac number, because 13220103223 - 29 = 13220102711 is a prime.

It is a super-2 number, since 2×132201032232 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13220103223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220104223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153722088 + ... + 153722173.

It is an arithmetic number, because the mean of its divisors is an integer number (3381886882).

Almost surely, 213220103223 is an apocalyptic number.

13220103223 is a deficient number, since it is larger than the sum of its proper divisors (307444305).

13220103223 is an equidigital number, since it uses as much as digits as its factorization.

13220103223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307444304.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13220103223 its reverse (32230102231), we get a palindrome (45450205454).

The spelling of 13220103223 in words is "thirteen billion, two hundred twenty million, one hundred three thousand, two hundred twenty-three".

Divisors: 1 43 307444261 13220103223