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144000431 = 607237233
BaseRepresentation
bin10001001010101…
…00010110101111
3101000221222110022
420211110112233
5243331003211
622142232355
73365661221
oct1045242657
9330858408
10144000431
1174314723
12402856bb
1323aab173
14151a6411
15c996bdb
hex89545af

144000431 has 4 divisors (see below), whose sum is σ = 144238272. Its totient is φ = 143762592.

The previous prime is 144000413. The next prime is 144000481. The reversal of 144000431 is 134000441.

144000431 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, and also an emirpimes, since its reverse is a distinct semiprime: 134000441 = 1223109567.

It is a cyclic number.

It is not a de Polignac number, because 144000431 - 226 = 76891567 is a prime.

It is a super-2 number, since 2×1440004312 = 41472248256371522, 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 (144000481) 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, 118010 + ... + 119223.

It is an arithmetic number, because the mean of its divisors is an integer number (36059568).

Almost surely, 2144000431 is an apocalyptic number.

144000431 is a deficient number, since it is larger than the sum of its proper divisors (237841).

144000431 is an equidigital number, since it uses as much as digits as its factorization.

144000431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237840.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 144000431 is about 12000.0179583199. The cubic root of 144000431 is about 524.1488017762.

Adding to 144000431 its reverse (134000441), we get a palindrome (278000872).

The spelling of 144000431 in words is "one hundred forty-four million, four hundred thirty-one", and thus it is an aban number.

Divisors: 1 607 237233 144000431