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144213013 = 7233743563
BaseRepresentation
bin10001001100010…
…00010000010101
3101001100210001201
420212020100111
5243404304023
622150552501
73400535050
oct1046102025
9331323051
10144213013
117444a40a
1240368731
1323b53b59
141521da97
15c9d9bad
hex8988415

144213013 has 32 divisors (see below), whose sum is σ = 181057536. Its totient is φ = 112166208.

The previous prime is 144213007. The next prime is 144213067. The reversal of 144213013 is 310312441.

It is not a de Polignac number, because 144213013 - 29 = 144212501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144213313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255870 + ... + 256432.

It is an arithmetic number, because the mean of its divisors is an integer number (5658048).

Almost surely, 2144213013 is an apocalyptic number.

It is an amenable number.

144213013 is a deficient number, since it is larger than the sum of its proper divisors (36844523).

144213013 is a wasteful number, since it uses less digits than its factorization.

144213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 144213013 is about 12008.8722617904. The cubic root of 144213013 is about 524.4066015022.

Adding to 144213013 its reverse (310312441), we get a palindrome (454525454).

The spelling of 144213013 in words is "one hundred forty-four million, two hundred thirteen thousand, thirteen".

Divisors: 1 7 23 37 43 161 259 301 563 851 989 1591 3941 5957 6923 11137 12949 20831 24209 36593 90643 145817 169463 256151 479113 556807 895733 3353791 3897649 6270131 20601859 144213013