144312338 has 4 divisors (see below), whose sum is σ = 216468510. Its totient is φ = 72156168.

The previous prime is 144312331. The next prime is 144312367. The reversal of 144312338 is 833213441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 144312169 + 169 = 12013^2 + 13^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144312338.

It is not an unprimeable number, because it can be changed into a prime (144312331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36078083 + ... + 36078086.

Almost surely, 2^144312338 is an apocalyptic number.

144312338 is a deficient number, since it is larger than the sum of its proper divisors (72156172).

144312338 is an equidigital number, since it uses as much as digits as its factorization.

144312338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72156171.

The product of its digits is 6912, while the sum is 29.

The square root of 144312338 is about 12013.0070340444. The cubic root of 144312338 is about 524.5269668127.

Adding to 144312338 its reverse (833213441), we get a palindrome (977525779).

The spelling of 144312338 in words is "one hundred forty-four million, three hundred twelve thousand, three hundred thirty-eight".