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144454031 = 378943867
BaseRepresentation
bin10001001110000…
…11000110001111
3101001211000200022
420213003012033
5243440012111
622200052355
73402560531
oct1047030617
9331730608
10144454031
11745a44a7
12404640bb
1323c09777
1415283851
15ca362db
hex89c318f

144454031 has 8 divisors (see below), whose sum is σ = 150028560. Its totient is φ = 138967488.

The previous prime is 144454019. The next prime is 144454043. The reversal of 144454031 is 130454441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (144454019) and next prime (144454043).

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

It is a cyclic number.

It is not a de Polignac number, because 144454031 - 214 = 144437647 is a prime.

It is a super-2 number, since 2×1444540312 = 41733934144297922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144454081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18641 + ... + 25226.

It is an arithmetic number, because the mean of its divisors is an integer number (18753570).

Almost surely, 2144454031 is an apocalyptic number.

144454031 is a deficient number, since it is larger than the sum of its proper divisors (5574529).

144454031 is an equidigital number, since it uses as much as digits as its factorization.

144454031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43993.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 144454031 is about 12018.9030697481. The cubic root of 144454031 is about 524.6985795094.

The spelling of 144454031 in words is "one hundred forty-four million, four hundred fifty-four thousand, thirty-one".

Divisors: 1 37 89 3293 43867 1623079 3904163 144454031