Search a number
-
+
123103302020 = 22521943280507
BaseRepresentation
bin111001010100110000…
…1110101000110000100
3102202202021120200120022
41302221201311012010
54004103421131040
6132315230554312
711615420542106
oct1625141650604
9382667520508
10123103302020
1148231671936
121ba37068998
13b7bb0ca35a
145d5b55d576
1533076526b5
hex1ca9875184

123103302020 has 24 divisors (see below), whose sum is σ = 258529637184. Its totient is φ = 49238901216.

The previous prime is 123103301939. The next prime is 123103302031. The reversal of 123103302020 is 20203301321.

It is a self number, because there is not a number n which added to its sum of digits gives 123103302020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298607 + ... + 579113.

It is an arithmetic number, because the mean of its divisors is an integer number (10772068216).

Almost surely, 2123103302020 is an apocalyptic number.

123103302020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123103302020 is an abundant number, since it is smaller than the sum of its proper divisors (135426335164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123103302020 is a wasteful number, since it uses less digits than its factorization.

123103302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302459 (or 302457 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 123103302020 its reverse (20203301321), we get a palindrome (143306603341).

The spelling of 123103302020 in words is "one hundred twenty-three billion, one hundred three million, three hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 21943 43886 87772 109715 219430 280507 438860 561014 1122028 1402535 2805070 5610140 6155165101 12310330202 24620660404 30775825505 61551651010 123103302020