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144717311 = 1723370121
BaseRepresentation
bin10001010000000…
…11010111111111
3101002022101211102
420220003113333
5244021423221
622205443315
73405035234
oct1050032777
9332271742
10144717311
1174764292
124057053b
1323c9c55b
141531178b
15ca8930b
hex8a035ff

144717311 has 8 divisors (see below), whose sum is σ = 159892704. Its totient is φ = 130282240.

The previous prime is 144717299. The next prime is 144717329. The reversal of 144717311 is 113717441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144717311 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 (144717611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184670 + ... + 185451.

It is an arithmetic number, because the mean of its divisors is an integer number (19986588).

Almost surely, 2144717311 is an apocalyptic number.

144717311 is a deficient number, since it is larger than the sum of its proper divisors (15175393).

144717311 is a wasteful number, since it uses less digits than its factorization.

144717311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370161.

The product of its digits is 2352, while the sum is 29.

The square root of 144717311 is about 12029.8508303304. The cubic root of 144717311 is about 525.0171555996.

It can be divided in two parts, 1447173 and 11, that multiplied together give a triangular number (15918903 = T5642).

The spelling of 144717311 in words is "one hundred forty-four million, seven hundred seventeen thousand, three hundred eleven".

Divisors: 1 17 23 391 370121 6292057 8512783 144717311