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20010130313 = 171177066489
BaseRepresentation
bin10010101000101100…
…100101101110001001
31220122112120221102112
4102220230211232021
5311440043132223
613105330312105
71305604205225
oct225054455611
956575527375
1020010130313
118539219088
123a65428635
131b6b8138c4
14d7b7a1785
157c1abc778
hex4a8b25b89

20010130313 has 4 divisors (see below), whose sum is σ = 21187196820. Its totient is φ = 18833063808.

The previous prime is 20010130199. The next prime is 20010130339. The reversal of 20010130313 is 31303101002.

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 18444899344 + 1565230969 = 135812^2 + 39563^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010130313 - 210 = 20010129289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20010130363) 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, 588533228 + ... + 588533261.

It is an arithmetic number, because the mean of its divisors is an integer number (5296799205).

Almost surely, 220010130313 is an apocalyptic number.

It is an amenable number.

20010130313 is a deficient number, since it is larger than the sum of its proper divisors (1177066507).

20010130313 is a wasteful number, since it uses less digits than its factorization.

20010130313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177066506.

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

Adding to 20010130313 its reverse (31303101002), we get a palindrome (51313231315).

The spelling of 20010130313 in words is "twenty billion, ten million, one hundred thirty thousand, three hundred thirteen".

Divisors: 1 17 1177066489 20010130313