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20301310111 = 235379210811
BaseRepresentation
bin10010111010000011…
…010110100010011111
31221101211111102000111
4102322003112202133
5313034113410421
613154251310451
71316041201015
oct227203264237
957354442014
1020301310111
118678618845
123b26a4b427
131bb6c43b44
14da831a8b5
157dc437ee1
hex4ba0d689f

20301310111 has 16 divisors (see below), whose sum is σ = 21856988160. Its totient is φ = 18810997920.

The previous prime is 20301310097. The next prime is 20301310151. The reversal of 20301310111 is 11101310302.

It is a cyclic number.

It is not a de Polignac number, because 20301310111 - 25 = 20301310079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20301310091 and 20301310100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301310151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9105 + ... + 201706.

It is an arithmetic number, because the mean of its divisors is an integer number (1366061760).

Almost surely, 220301310111 is an apocalyptic number.

20301310111 is a deficient number, since it is larger than the sum of its proper divisors (1555678049).

20301310111 is a wasteful number, since it uses less digits than its factorization.

20301310111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210966.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 20301310111 its reverse (11101310302), we get a palindrome (31402620413).

The spelling of 20301310111 in words is "twenty billion, three hundred one million, three hundred ten thousand, one hundred eleven".

Divisors: 1 23 53 79 1219 1817 4187 96301 210811 4848653 11172983 16654069 256978609 383043587 882665657 20301310111