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23220103 = 28198237
BaseRepresentation
bin101100010010…
…0111110000111
31121200200222211
41120210332013
521421020403
62145404251
7401240044
oct130447607
947620884
1023220103
111211a675
127939687
134a7000a
1431261cb
15208a06d
hex1624f87

23220103 has 4 divisors (see below), whose sum is σ = 23231160. Its totient is φ = 23209048.

The previous prime is 23220091. The next prime is 23220139. The reversal of 23220103 is 30102232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23220103 - 29 = 23219591 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 (23220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300 + ... + 6937.

It is an arithmetic number, because the mean of its divisors is an integer number (5807790).

Almost surely, 223220103 is an apocalyptic number.

23220103 is a deficient number, since it is larger than the sum of its proper divisors (11057).

23220103 is an equidigital number, since it uses as much as digits as its factorization.

23220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11056.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23220103 is about 4818.7242087507. The cubic root of 23220103 is about 285.2909842247.

Adding to 23220103 its reverse (30102232), we get a palindrome (53322335).

The spelling of 23220103 in words is "twenty-three million, two hundred twenty thousand, one hundred three".

Divisors: 1 2819 8237 23220103