1144140311 has 4 divisors (see below), whose sum is σ = 1147419000. Its totient is φ = 1140861624.

The previous prime is 1144140289. The next prime is 1144140337. The reversal of 1144140311 is 1130414411.

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 1144140311 - 2⁶ = 1144140247 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 (1144145311) 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, 1638821 + ... + 1639518.

It is an arithmetic number, because the mean of its divisors is an integer number (286854750).

Almost surely, 2^1144140311 is an apocalyptic number.

1144140311 is a deficient number, since it is larger than the sum of its proper divisors (3278689).

1144140311 is an equidigital number, since it uses as much as digits as its factorization.

1144140311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278688.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1144140311 is about 33825.1431778197. The cubic root of 1144140311 is about 1045.9070628394.

Adding to 1144140311 its reverse (1130414411), we get a palindrome (2274554722).

The spelling of 1144140311 in words is "one billion, one hundred forty-four million, one hundred forty thousand, three hundred eleven".