1144020231 has 24 divisors (see below), whose sum is σ = 1693115424. Its totient is φ = 744145920.

The previous prime is 1144020209. The next prime is 1144020247. The reversal of 1144020231 is 1320204411.

It is not a de Polignac number, because 1144020231 - 2¹⁰ = 1144019207 is a prime.

It is a super-2 number, since 2×1144020231² = 2617564577874586722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144025231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52755 + ... + 71211.

It is an arithmetic number, because the mean of its divisors is an integer number (70546476).

Almost surely, 2^1144020231 is an apocalyptic number.

1144020231 is a deficient number, since it is larger than the sum of its proper divisors (549095193).

1144020231 is a wasteful number, since it uses less digits than its factorization.

1144020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18631 (or 18628 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1144020231 is about 33823.3681202804. The cubic root of 1144020231 is about 1045.8704714899.

Adding to 1144020231 its reverse (1320204411), we get a palindrome (2464224642).

The spelling of 1144020231 in words is "one billion, one hundred forty-four million, twenty thousand, two hundred thirty-one".