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2229231 = 31275851
BaseRepresentation
bin1000100000001111101111
311012020221010
420200033233
51032313411
6115440303
724643134
oct10401757
94166833
102229231
111292944
128b6093
13600894
1442058b
152e07a6
hex2203ef

2229231 has 8 divisors (see below), whose sum is σ = 2996224. Its totient is φ = 1474200.

The previous prime is 2229169. The next prime is 2229239. The reversal of 2229231 is 1329222.

2229231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2229231 - 26 = 2229167 is a prime.

It is a super-2 number, since 2×22292312 = 9938941702722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 25 + 217 + 93 + 221 + 35 + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2229198 and 2229207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545 + ... + 3306.

It is an arithmetic number, because the mean of its divisors is an integer number (374528).

22229231 is an apocalyptic number.

2229231 is a deficient number, since it is larger than the sum of its proper divisors (766993).

2229231 is a wasteful number, since it uses less digits than its factorization.

2229231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981.

The product of its digits is 432, while the sum is 21.

The square root of 2229231 is about 1493.0609498611. The cubic root of 2229231 is about 130.6326362454.

Subtracting from 2229231 its reverse (1329222), we obtain a palindrome (900009).

It can be divided in two parts, 222 and 9231, that added together give a triangular number (9453 = T137).

The spelling of 2229231 in words is "two million, two hundred twenty-nine thousand, two hundred thirty-one".

Divisors: 1 3 127 381 5851 17553 743077 2229231