Search a number
-
+
2020013101 = 19106316479
BaseRepresentation
bin111100001100110…
…1111010000101101
312012210000022001001
41320121233100231
513114110404401
6532235520301
7101025554011
oct17031572055
95183008031
102020013101
11947276817
124845b9091
13262663732
141523c8541
15bc517601
hex7866f42d

2020013101 has 4 divisors (see below), whose sum is σ = 2126329600. Its totient is φ = 1913696604.

The previous prime is 2020013087. The next prime is 2020013123. The reversal of 2020013101 is 1013100202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1013100202 = 2506550101.

It is a cyclic number.

It is not a de Polignac number, because 2020013101 - 219 = 2019488813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020013131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53158221 + ... + 53158258.

It is an arithmetic number, because the mean of its divisors is an integer number (531582400).

Almost surely, 22020013101 is an apocalyptic number.

It is an amenable number.

2020013101 is a deficient number, since it is larger than the sum of its proper divisors (106316499).

2020013101 is a wasteful number, since it uses less digits than its factorization.

2020013101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106316498.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2020013101 is about 44944.5558549642. Note that the first 3 decimals coincide. The cubic root of 2020013101 is about 1264.1095977062.

Adding to 2020013101 its reverse (1013100202), we get a palindrome (3033113303).

The spelling of 2020013101 in words is "two billion, twenty million, thirteen thousand, one hundred one".

Divisors: 1 19 106316479 2020013101