Search a number
-
+
20013031301 = 33329600469
BaseRepresentation
bin10010101000110111…
…101001111110000101
31220122202001022211112
4102220313221332011
5311441314000201
613105512414405
71305640650014
oct225067517605
956582038745
1020013031301
11853a91a69a
123a663a7405
131b6c2bb173
14d7bd18a7b
157c1e920bb
hex4a8de9f85

20013031301 has 4 divisors (see below), whose sum is σ = 20013665100. Its totient is φ = 20012397504.

The previous prime is 20013031277. The next prime is 20013031327. The reversal of 20013031301 is 10313031002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16958811076 + 3054220225 = 130226^2 + 55265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013031301 - 218 = 20012769157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013031391) 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 3 ways as a sum of consecutive naturals, for example, 266906 + ... + 333563.

It is an arithmetic number, because the mean of its divisors is an integer number (5003416275).

Almost surely, 220013031301 is an apocalyptic number.

It is an amenable number.

20013031301 is a deficient number, since it is larger than the sum of its proper divisors (633799).

20013031301 is an equidigital number, since it uses as much as digits as its factorization.

20013031301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633798.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20013031301 its reverse (10313031002), we get a palindrome (30326062303).

The spelling of 20013031301 in words is "twenty billion, thirteen million, thirty-one thousand, three hundred one".

Divisors: 1 33329 600469 20013031301