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2011142031 = 3976911141
BaseRepresentation
bin111011111011111…
…1001011110001111
312012011022121012220
41313313321132033
513104323021111
6531321430423
7100560265563
oct16767713617
95164277186
102011142031
11942267858
1248163b413
13260878992
141511596a3
15bb863e06
hex77df978f

2011142031 has 8 divisors (see below), whose sum is σ = 2709167664. Its totient is φ = 1326938880.

The previous prime is 2011141991. The next prime is 2011142051. The reversal of 2011142031 is 1302411102.

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

It is not a de Polignac number, because 2011142031 - 27 = 2011141903 is a prime.

It is a super-2 number, since 2×20111420312 = 8089384537709609922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011142031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011142051) 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, 3455280 + ... + 3455861.

It is an arithmetic number, because the mean of its divisors is an integer number (338645958).

Almost surely, 22011142031 is an apocalyptic number.

2011142031 is a deficient number, since it is larger than the sum of its proper divisors (698025633).

2011142031 is an equidigital number, since it uses as much as digits as its factorization.

2011142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911241.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2011142031 is about 44845.7582275069. The cubic root of 2011142031 is about 1262.2563983939.

Adding to 2011142031 its reverse (1302411102), we get a palindrome (3313553133).

The spelling of 2011142031 in words is "two billion, eleven million, one hundred forty-two thousand, thirty-one".

Divisors: 1 3 97 291 6911141 20733423 670380677 2011142031