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2011430231 = 191039101891
BaseRepresentation
bin111011111100011…
…1111110101010111
312012011212020112222
41313320333311113
513104411231411
6531331532555
7100562606036
oct16770776527
95164766488
102011430231
11942444338
1248175a15b
13260949c05
141511d271d
15bb8be4db
hex77e3fd57

2011430231 has 8 divisors (see below), whose sum is σ = 2119353600. Its totient is φ = 1903712760.

The previous prime is 2011430209. The next prime is 2011430243. The reversal of 2011430231 is 1320341102.

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 2011430231 - 26 = 2011430167 is a prime.

It is a super-2 number, since 2×20114302312 = 8091703148361426722, 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 (2011430261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31205 + ... + 70686.

It is an arithmetic number, because the mean of its divisors is an integer number (264919200).

Almost surely, 22011430231 is an apocalyptic number.

2011430231 is a deficient number, since it is larger than the sum of its proper divisors (107923369).

2011430231 is a wasteful number, since it uses less digits than its factorization.

2011430231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102949.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2011430231 is about 44848.9713482929. The cubic root of 2011430231 is about 1262.3166899949.

Adding to 2011430231 its reverse (1320341102), we get a palindrome (3331771333).

The spelling of 2011430231 in words is "two billion, eleven million, four hundred thirty thousand, two hundred thirty-one".

Divisors: 1 19 1039 19741 101891 1935929 105864749 2011430231