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20310002104 = 2371312768539
BaseRepresentation
bin10010111010100100…
…100000100110111000
31221102102212000012011
4102322210200212320
5313043330031404
613155201455304
71316205112060
oct227244404670
957372760164
1020310002104
118682515207
123b29941534
131bb8998232
14da95403a0
157dd0a3604
hex4ba9209b8

20310002104 has 32 divisors (see below), whose sum is σ = 43853673600. Its totient is φ = 8637838560.

The previous prime is 20310002099. The next prime is 20310002107. The reversal of 20310002104 is 40120001302.

It is a super-3 number, since 3×203100021043 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310002107) 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, 1376934 + ... + 1391605.

It is an arithmetic number, because the mean of its divisors is an integer number (1370427300).

Almost surely, 220310002104 is an apocalyptic number.

It is an amenable number.

20310002104 is an abundant number, since it is smaller than the sum of its proper divisors (23543671496).

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

20310002104 is a wasteful number, since it uses less digits than its factorization.

20310002104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768683 (or 2768679 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20310002104 its reverse (40120001302), we get a palindrome (60430003406).

The spelling of 20310002104 in words is "twenty billion, three hundred ten million, two thousand, one hundred four".

Divisors: 1 2 4 7 8 14 28 56 131 262 524 917 1048 1834 3668 7336 2768539 5537078 11074156 19379773 22148312 38759546 77519092 155038184 362678609 725357218 1450714436 2538750263 2901428872 5077500526 10155001052 20310002104