144031220 has 24 divisors (see below), whose sum is σ = 306297600. Its totient is φ = 56882592.

The previous prime is 144031219. The next prime is 144031241. The reversal of 144031220 is 22130441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44000 + ... + 47159.

It is an arithmetic number, because the mean of its divisors is an integer number (12762400).

Almost surely, 2^144031220 is an apocalyptic number.

144031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144031220 is an abundant number, since it is smaller than the sum of its proper divisors (162266380).

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

144031220 is a wasteful number, since it uses less digits than its factorization.

144031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91247 (or 91245 counting only the distinct ones).

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

The square root of 144031220 is about 12001.3007628340. The cubic root of 144031220 is about 524.1861555242.

Adding to 144031220 its reverse (22130441), we get a palindrome (166161661).

The spelling of 144031220 in words is "one hundred forty-four million, thirty-one thousand, two hundred twenty".