1144144231 has 4 divisors (see below), whose sum is σ = 1165731912. Its totient is φ = 1122556552.

The previous prime is 1144144219. The next prime is 1144144247. The reversal of 1144144231 is 1324414411.

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 1144144231 - 2⁷ = 1144144103 is a prime.

It is a super-2 number, since 2×1144144231² = 2618132042661162722, 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 = 1144144196 and 1144144205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144144201) 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, 10793761 + ... + 10793866.

It is an arithmetic number, because the mean of its divisors is an integer number (291432978).

Almost surely, 2^1144144231 is an apocalyptic number.

1144144231 is a deficient number, since it is larger than the sum of its proper divisors (21587681).

1144144231 is an equidigital number, since it uses as much as digits as its factorization.

1144144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587680.

The product of its digits is 1536, while the sum is 25.

The square root of 1144144231 is about 33825.2011228315. The cubic root of 1144144231 is about 1045.9082573174.

Adding to 1144144231 its reverse (1324414411), we get a palindrome (2468558642).

The spelling of 1144144231 in words is "one billion, one hundred forty-four million, one hundred forty-four thousand, two hundred thirty-one".