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2211110031 = 31356695129
BaseRepresentation
bin1000001111001010…
…1101110010001111
312201002121000202010
42003302231302033
514012021010111
61003223432303
7105536060634
oct20362556217
95632530663
102211110031
11a35128769
125185b5693
13293121540
1416d93018b
15ce1b3aa6
hex83cadc8f

2211110031 has 8 divisors (see below), whose sum is σ = 3174927280. Its totient is φ = 1360683072.

The previous prime is 2211109997. The next prime is 2211110131. The reversal of 2211110031 is 1300111122.

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

It is not a de Polignac number, because 2211110031 - 29 = 2211109519 is a prime.

It is a super-2 number, since 2×22111100312 = 9778015138377641922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211109989 and 2211110016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211110131) 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 7 ways as a sum of consecutive naturals, for example, 28347526 + ... + 28347603.

It is an arithmetic number, because the mean of its divisors is an integer number (396865910).

Almost surely, 22211110031 is an apocalyptic number.

2211110031 is a deficient number, since it is larger than the sum of its proper divisors (963817249).

2211110031 is a wasteful number, since it uses less digits than its factorization.

2211110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56695145.

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

The square root of 2211110031 is about 47022.4417804946. The cubic root of 2211110031 is about 1302.7771068097. Note that the first 3 decimals are identical.

Adding to 2211110031 its reverse (1300111122), we get a palindrome (3511221153).

The spelling of 2211110031 in words is "two billion, two hundred eleven million, one hundred ten thousand, thirty-one".

Divisors: 1 3 13 39 56695129 170085387 737036677 2211110031