144835231 has 4 divisors (see below), whose sum is σ = 144908712. Its totient is φ = 144761752.

The previous prime is 144835217. The next prime is 144835237. The reversal of 144835231 is 132538441.

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

It is a cyclic number.

It is not a de Polignac number, because 144835231 - 2²³ = 136446623 is a prime.

It is a super-2 number, since 2×144835231² = 41954488277646722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144835193 and 144835202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144835237) 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, 33700 + ... + 37753.

It is an arithmetic number, because the mean of its divisors is an integer number (36227178).

Almost surely, 2^144835231 is an apocalyptic number.

144835231 is a deficient number, since it is larger than the sum of its proper divisors (73481).

144835231 is an equidigital number, since it uses as much as digits as its factorization.

144835231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73480.

The product of its digits is 11520, while the sum is 31.

The square root of 144835231 is about 12034.7509737427. The cubic root of 144835231 is about 525.1597167873.

The spelling of 144835231 in words is "one hundred forty-four million, eight hundred thirty-five thousand, two hundred thirty-one".