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144213223 = 7211267557
BaseRepresentation
bin10001001100010…
…00010011100111
3101001100210100111
420212020103213
5243404310343
622150553451
73400535500
oct1046102347
9331323314
10144213223
117444a590
1240368887
1323b53c8b
141521dba7
15c9d9c9d
hex89884e7

144213223 has 12 divisors (see below), whose sum is σ = 183009672. Its totient is φ = 112373520.

The previous prime is 144213217. The next prime is 144213229. The reversal of 144213223 is 322312441.

It is an interprime number because it is at equal distance from previous prime (144213217) and next prime (144213229).

It is not a de Polignac number, because 144213223 - 25 = 144213191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144213194 and 144213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144213229) 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, 133240 + ... + 134317.

It is an arithmetic number, because the mean of its divisors is an integer number (15250806).

Almost surely, 2144213223 is an apocalyptic number.

144213223 is a deficient number, since it is larger than the sum of its proper divisors (38796449).

144213223 is a wasteful number, since it uses less digits than its factorization.

144213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267582 (or 267575 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 144213223 is about 12008.8810053227. The cubic root of 144213223 is about 524.4068560454.

Adding to 144213223 its reverse (322312441), we get a palindrome (466525664).

The spelling of 144213223 in words is "one hundred forty-four million, two hundred thirteen thousand, two hundred twenty-three".

Divisors: 1 7 11 49 77 539 267557 1872899 2943127 13110293 20601889 144213223