144631 has 4 divisors (see below), whose sum is σ = 147064. Its totient is φ = 142200.

The previous prime is 144629. The next prime is 144659. The reversal of 144631 is 136441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136441 = 47 ⋅2903.

It is a cyclic number.

It is not a de Polignac number, because 144631 - 2¹ = 144629 is a prime.

It is a super-2 number, since 2×144631² = 41836252322, which contains 22 as substring.

It is a Duffinian number.

144631 is a lucky number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 144599 and 144608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (36766).

2¹⁴⁴⁶³¹ is an apocalyptic number.

144631 is a deficient number, since it is larger than the sum of its proper divisors (2433).

144631 is an equidigital number, since it uses as much as digits as its factorization.

144631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432.

The product of its digits is 288, while the sum is 19.

The square root of 144631 is about 380.3038259077. The cubic root of 144631 is about 52.4912759502.

The spelling of 144631 in words is "one hundred forty-four thousand, six hundred thirty-one".