144631231 has 8 divisors (see below), whose sum is σ = 151606224. Its totient is φ = 137820480.

The previous prime is 144631219. The next prime is 144631237. The reversal of 144631231 is 132136441.

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

It is a cyclic number.

It is not a de Polignac number, because 144631231 - 2⁷ = 144631103 is a prime.

It is a super-2 number, since 2×144631231² = 41836385961150722, 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 = 144631196 and 144631205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144631237) 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, 39256 + ... + 42781.

It is an arithmetic number, because the mean of its divisors is an integer number (18950778).

Almost surely, 2^144631231 is an apocalyptic number.

144631231 is a deficient number, since it is larger than the sum of its proper divisors (6974993).

144631231 is an equidigital number, since it uses as much as digits as its factorization.

144631231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82121.

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

The square root of 144631231 is about 12026.2725314205. The cubic root of 144631231 is about 524.9130389601.

Adding to 144631231 its reverse (132136441), we get a palindrome (276767672).

The spelling of 144631231 in words is "one hundred forty-four million, six hundred thirty-one thousand, two hundred thirty-one".