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144089031 = 348029677
BaseRepresentation
bin10001001011010…
…01111111000111
3101001010110222210
420211221333013
5243341322111
622144154503
73366510432
oct1045517707
9331113883
10144089031
1174375249
1240308a33
1323b0c5a8
14151ca819
15c9b30a6
hex8969fc7

144089031 has 4 divisors (see below), whose sum is σ = 192118712. Its totient is φ = 96059352.

The previous prime is 144089009. The next prime is 144089083. The reversal of 144089031 is 130980441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130980441 = 343660147.

It is a de Polignac number, because none of the positive numbers 2k-144089031 is a prime.

It is a super-2 number, since 2×1440890312 = 41523297709037922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144089031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144089531) 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, 24014836 + ... + 24014841.

It is an arithmetic number, because the mean of its divisors is an integer number (48029678).

Almost surely, 2144089031 is an apocalyptic number.

144089031 is a deficient number, since it is larger than the sum of its proper divisors (48029681).

144089031 is an equidigital number, since it uses as much as digits as its factorization.

144089031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48029680.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 144089031 is about 12003.7090517890. The cubic root of 144089031 is about 524.2562784516.

The spelling of 144089031 in words is "one hundred forty-four million, eighty-nine thousand, thirty-one".

Divisors: 1 3 48029677 144089031