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20312300010 = 2354389176921
BaseRepresentation
bin10010111010101101…
…010001100111101010
31221102121011202022210
4102322231101213222
5313044422100020
613155323025550
71316233462362
oct227255214752
957377152283
1020312300010
118683844702
123b2a66b2b6
131bb92c1142
14da997b9a2
157dd3a93e0
hex4bab519ea

20312300010 has 64 divisors (see below), whose sum is σ = 50444000640. Its totient is φ = 5231170560.

The previous prime is 20312299939. The next prime is 20312300011. The reversal of 20312300010 is 1000321302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20312300011) 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 31 ways as a sum of consecutive naturals, for example, 26350 + ... + 203270.

It is an arithmetic number, because the mean of its divisors is an integer number (788187510).

Almost surely, 220312300010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312300010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25222000320).

20312300010 is an abundant number, since it is smaller than the sum of its proper divisors (30131700630).

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

20312300010 is a wasteful number, since it uses less digits than its factorization.

20312300010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177063.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20312300010 its reverse (1000321302), we get a palindrome (21312621312).

The spelling of 20312300010 in words is "twenty billion, three hundred twelve million, three hundred thousand, ten".

Divisors: 1 2 3 5 6 10 15 30 43 86 89 129 178 215 258 267 430 445 534 645 890 1290 1335 2670 3827 7654 11481 19135 22962 38270 57405 114810 176921 353842 530763 884605 1061526 1769210 2653815 5307630 7607603 15215206 15745969 22822809 31491938 38038015 45645618 47237907 76076030 78729845 94475814 114114045 157459690 228228090 236189535 472379070 677076667 1354153334 2031230001 3385383335 4062460002 6770766670 10156150005 20312300010