1144311057 has 12 divisors (see below), whose sum is σ = 1714112400. Its totient is φ = 762873876.

The previous prime is 1144311041. The next prime is 1144311067. The reversal of 1144311057 is 7501134411.

It is not a de Polignac number, because 1144311057 - 2⁴ = 1144311041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1144311057.

It is not an unprimeable number, because it can be changed into a prime (1144311067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2354307 + ... + 2354792.

It is an arithmetic number, because the mean of its divisors is an integer number (142842700).

Almost surely, 2^1144311057 is an apocalyptic number.

It is an amenable number.

1144311057 is a deficient number, since it is larger than the sum of its proper divisors (569801343).

1144311057 is an frugal number, since it uses more digits than its factorization.

1144311057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709114 (or 4709102 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1144311057 is about 33827.6670345444. The cubic root of 1144311057 is about 1045.9590889656.

Adding to 1144311057 its reverse (7501134411), we get a palindrome (8645445468).

It can be divided in two parts, 11443 and 11057, that added together give a square (22500 = 150²).

The spelling of 1144311057 in words is "one billion, one hundred forty-four million, three hundred eleven thousand, fifty-seven".