144231340 has 24 divisors (see below), whose sum is σ = 330421392. Its totient is φ = 52447680.

The previous prime is 144231323. The next prime is 144231359. The reversal of 144231340 is 43132441.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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, 327579 + ... + 328018.

It is an arithmetic number, because the mean of its divisors is an integer number (13767558).

Almost surely, 2^144231340 is an apocalyptic number.

144231340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144231340 is an abundant number, since it is smaller than the sum of its proper divisors (186190052).

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

144231340 is a wasteful number, since it uses less digits than its factorization.

144231340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655617 (or 655615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 144231340 is about 12009.6352983761. The cubic root of 144231340 is about 524.4288149222.

Adding to 144231340 its reverse (43132441), we get a palindrome (187363781).

The spelling of 144231340 in words is "one hundred forty-four million, two hundred thirty-one thousand, three hundred forty".