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40211311 = 721575227
BaseRepresentation
bin1001100101100…
…1001101101111
32210122221112211
42121121031233
540243230221
63553511251
7665535100
oct231311557
983587484
1040211311
1120775398
1211572527
13843ba9a
1454aa3a7
1537e46e1
hex265936f

40211311 has 12 divisors (see below), whose sum is σ = 47083368. Its totient is φ = 34240752.

The previous prime is 40211293. The next prime is 40211351. The reversal of 40211311 is 11311204.

It is not a de Polignac number, because 40211311 - 25 = 40211279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40211291 and 40211300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40211351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5080 + ... + 10306.

It is an arithmetic number, because the mean of its divisors is an integer number (3923614).

Almost surely, 240211311 is an apocalyptic number.

40211311 is a deficient number, since it is larger than the sum of its proper divisors (6872057).

40211311 is a wasteful number, since it uses less digits than its factorization.

40211311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398 (or 5391 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 40211311 is about 6341.2389168048. The cubic root of 40211311 is about 342.5963598374.

Adding to 40211311 its reverse (11311204), we get a palindrome (51522515).

The spelling of 40211311 in words is "forty million, two hundred eleven thousand, three hundred eleven".

Divisors: 1 7 49 157 1099 5227 7693 36589 256123 820639 5744473 40211311