1144001311 has 4 divisors (see below), whose sum is σ = 1171903824. Its totient is φ = 1116098800.

The previous prime is 1144001303. The next prime is 1144001333. The reversal of 1144001311 is 1131004411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131004411 = 263 ⋅4300397.

It is a cyclic number.

It is not a de Polignac number, because 1144001311 - 2³ = 1144001303 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 (1144001011) 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, 13951195 + ... + 13951276.

It is an arithmetic number, because the mean of its divisors is an integer number (292975956).

Almost surely, 2^1144001311 is an apocalyptic number.

1144001311 is a deficient number, since it is larger than the sum of its proper divisors (27902513).

1144001311 is an equidigital number, since it uses as much as digits as its factorization.

1144001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27902512.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1144001311 is about 33823.0884308338. The cubic root of 1144001311 is about 1045.8647058639.

Adding to 1144001311 its reverse (1131004411), we get a palindrome (2275005722).

The spelling of 1144001311 in words is "one billion, one hundred forty-four million, one thousand, three hundred eleven".