144840312 has 80 divisors (see below), whose sum is σ = 410727240. Its totient is φ = 47680704.

The previous prime is 144840299. The next prime is 144840313. The reversal of 144840312 is 213048441.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144840313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52438 + ... + 55130.

Almost surely, 2^144840312 is an apocalyptic number.

144840312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144840312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205363620).

144840312 is an abundant number, since it is smaller than the sum of its proper divisors (265886928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144840312 is a wasteful number, since it uses less digits than its factorization.

144840312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794 (or 2781 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 144840312 is about 12034.9620689057. The cubic root of 144840312 is about 525.1658578008.

Adding to 144840312 its reverse (213048441), we get a palindrome (357888753).

It can be divided in two parts, 144 and 840312, that added together give a triangular number (840456 = T₁₂₉₆).

The spelling of 144840312 in words is "one hundred forty-four million, eight hundred forty thousand, three hundred twelve".