Search a number
-
+
2020031213 = 17322950989
BaseRepresentation
bin111100001100111…
…0011101011101101
312012210001012212212
41320121303223231
513114111444323
6532240140205
7101025660554
oct17031635355
95183035785
102020031213
11947289392
12484607665
1326266ba55
141523d0d9b
15bc51cb78
hex78673aed

2020031213 has 8 divisors (see below), whose sum is σ = 2040619800. Its totient is φ = 1999545408.

The previous prime is 2020031197. The next prime is 2020031257. The reversal of 2020031213 is 3121300202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1257553444 + 762477769 = 35462^2 + 27613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020031213 - 24 = 2020031197 is a prime.

It is a super-2 number, since 2×20200312132 = 8161052202988502738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020031413) 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 7 ways as a sum of consecutive naturals, for example, 14123 + ... + 65111.

It is an arithmetic number, because the mean of its divisors is an integer number (255077475).

Almost surely, 22020031213 is an apocalyptic number.

It is an amenable number.

2020031213 is a deficient number, since it is larger than the sum of its proper divisors (20588587).

2020031213 is a wasteful number, since it uses less digits than its factorization.

2020031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51391.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2020031213 is about 44944.7573472146. The cubic root of 2020031213 is about 1264.1133758145.

Adding to 2020031213 its reverse (3121300202), we get a palindrome (5141331415).

The spelling of 2020031213 in words is "two billion, twenty million, thirty-one thousand, two hundred thirteen".

Divisors: 1 173 229 39617 50989 8821097 11676481 2020031213