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144044231 = 757190283
BaseRepresentation
bin10001001010111…
…11000011000111
3101001001012112112
420211133003013
5243333403411
622143211235
73366233012
oct1045370307
9331035475
10144044231
1174344621
12402a6b1b
1323ac5096
14151b8379
15c9a4b8b
hex895f0c7

144044231 has 4 divisors (see below), whose sum is σ = 144235272. Its totient is φ = 143853192.

The previous prime is 144044227. The next prime is 144044261. The reversal of 144044231 is 132440441.

It is a happy number.

144044231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144044231 - 22 = 144044227 is a prime.

It is a super-2 number, since 2×1440442312 = 41497480968762722, 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 = 144044197 and 144044206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144044261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94385 + ... + 95898.

It is an arithmetic number, because the mean of its divisors is an integer number (36058818).

Almost surely, 2144044231 is an apocalyptic number.

144044231 is a deficient number, since it is larger than the sum of its proper divisors (191041).

144044231 is an equidigital number, since it uses as much as digits as its factorization.

144044231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191040.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 144044231 is about 12001.8428168344. The cubic root of 144044231 is about 524.2019390946.

Adding to 144044231 its reverse (132440441), we get a palindrome (276484672).

The spelling of 144044231 in words is "one hundred forty-four million, forty-four thousand, two hundred thirty-one".

Divisors: 1 757 190283 144044231