1144142311 has 4 divisors (see below), whose sum is σ = 1232153272. Its totient is φ = 1056131352.

The previous prime is 1144142303. The next prime is 1144142387. The reversal of 1144142311 is 1132414411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1132414411 = 269 ⋅4209719.

It is a cyclic number.

It is not a de Polignac number, because 1144142311 - 2³ = 1144142303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144142611) 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, 44005461 + ... + 44005486.

It is an arithmetic number, because the mean of its divisors is an integer number (308038318).

Almost surely, 2^1144142311 is an apocalyptic number.

1144142311 is a deficient number, since it is larger than the sum of its proper divisors (88010961).

1144142311 is an equidigital number, since it uses as much as digits as its factorization.

1144142311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88010960.

The product of its digits is 384, while the sum is 22.

The square root of 1144142311 is about 33825.1727416136. The cubic root of 1144142311 is about 1045.9076722673.

Adding to 1144142311 its reverse (1132414411), we get a palindrome (2276556722).

The spelling of 1144142311 in words is "one billion, one hundred forty-four million, one hundred forty-two thousand, three hundred eleven".