144216331 has 8 divisors (see below), whose sum is σ = 164913120. Its totient is φ = 123543168.

The previous prime is 144216307. The next prime is 144216337. The reversal of 144216331 is 133612441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144216331 - 2⁵ = 144216299 is a prime.

It is a super-2 number, since 2×144216331² = 41596700254203122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144216296 and 144216305.

It is not an unprimeable number, because it can be changed into a prime (144216337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10065 + ... + 19741.

It is an arithmetic number, because the mean of its divisors is an integer number (20614140).

Almost surely, 2^144216331 is an apocalyptic number.

144216331 is a deficient number, since it is larger than the sum of its proper divisors (20696789).

144216331 is an equidigital number, since it uses as much as digits as its factorization.

144216331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11813.

The product of its digits is 1728, while the sum is 25.

The square root of 144216331 is about 12009.0104088555. The cubic root of 144216331 is about 524.4106232562.

Adding to 144216331 its reverse (133612441), we get a palindrome (277828772).

The spelling of 144216331 in words is "one hundred forty-four million, two hundred sixteen thousand, three hundred thirty-one".