144631320 has 64 divisors (see below), whose sum is σ = 436860000. Its totient is φ = 38304768.

The previous prime is 144631309. The next prime is 144631321. The reversal of 144631320 is 23136441.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144631321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13836 + ... + 21924.

Almost surely, 2^144631320 is an apocalyptic number.

144631320 is a gapful number since it is divisible by the number (10) 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 144631320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218430000).

144631320 is an abundant number, since it is smaller than the sum of its proper divisors (292228680).

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

144631320 is a wasteful number, since it uses less digits than its factorization.

144631320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252 (or 8248 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 144631320 is about 12026.2762316521. The cubic root of 144631320 is about 524.9131466299.

Adding to 144631320 its reverse (23136441), we get a palindrome (167767761).

The spelling of 144631320 in words is "one hundred forty-four million, six hundred thirty-one thousand, three hundred twenty".