144331231 has 16 divisors (see below), whose sum is σ = 163452960. Its totient is φ = 126241920.

The previous prime is 144331223. The next prime is 144331249. The reversal of 144331231 is 132133441.

It is a cyclic number.

It is not a de Polignac number, because 144331231 - 2³ = 144331223 is a prime.

It is a super-2 number, since 2×144331231² = 41663008483950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144331331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118381 + ... + 119593.

It is an arithmetic number, because the mean of its divisors is an integer number (10215810).

Almost surely, 2^144331231 is an apocalyptic number.

144331231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

144331231 is a deficient number, since it is larger than the sum of its proper divisors (19121729).

144331231 is a wasteful number, since it uses less digits than its factorization.

144331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its digits is 864, while the sum is 22.

The square root of 144331231 is about 12013.7933642959. The cubic root of 144331231 is about 524.5498557208.

Adding to 144331231 its reverse (132133441), we get a palindrome (276464672).

The spelling of 144331231 in words is "one hundred forty-four million, three hundred thirty-one thousand, two hundred thirty-one".