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20000330311 = 131538486947
BaseRepresentation
bin10010101000000111…
…001101001001000111
31220121212011001100111
4102220013031021013
5311430041032221
613104340253451
71305425000623
oct225007151107
956555131314
1020000330311
118533735205
123a620a1287
131b697920a0
14d7a370183
157c0cd3be1
hex4a81cd247

20000330311 has 4 divisors (see below), whose sum is σ = 21538817272. Its totient is φ = 18461843352.

The previous prime is 20000330299. The next prime is 20000330377. The reversal of 20000330311 is 11303300002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000330311 - 211 = 20000328263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1538486947 = 20000330311 / (2 + 0 + 0 + 0 + 0 + 3 + 3 + 0 + 3 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000330291 and 20000330300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000336311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769243461 + ... + 769243486.

It is an arithmetic number, because the mean of its divisors is an integer number (5384704318).

Almost surely, 220000330311 is an apocalyptic number.

20000330311 is a deficient number, since it is larger than the sum of its proper divisors (1538486961).

20000330311 is a wasteful number, since it uses less digits than its factorization.

20000330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538486960.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20000330311 its reverse (11303300002), we get a palindrome (31303630313).

The spelling of 20000330311 in words is "twenty billion, three hundred thirty thousand, three hundred eleven".

Divisors: 1 13 1538486947 20000330311