144231231 has 4 divisors (see below), whose sum is σ = 192308312. Its totient is φ = 96154152.

The previous prime is 144231193. The next prime is 144231257. The reversal of 144231231 is 132132441.

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

It is not a de Polignac number, because 144231231 - 2¹⁹ = 143706943 is a prime.

It is a super-2 number, since 2×144231231² = 41605295991550722, 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 = 144231198 and 144231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144231431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24038536 + ... + 24038541.

It is an arithmetic number, because the mean of its divisors is an integer number (48077078).

Almost surely, 2^144231231 is an apocalyptic number.

144231231 is a deficient number, since it is larger than the sum of its proper divisors (48077081).

144231231 is an equidigital number, since it uses as much as digits as its factorization.

144231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48077080.

The product of its digits is 576, while the sum is 21.

The square root of 144231231 is about 12009.6307603523. The cubic root of 144231231 is about 524.4286828133.

Adding to 144231231 its reverse (132132441), we get a palindrome (276363672).

The spelling of 144231231 in words is "one hundred forty-four million, two hundred thirty-one thousand, two hundred thirty-one".