1144317247 has 4 divisors (see below), whose sum is σ = 1170929320. Its totient is φ = 1117705176.

The previous prime is 1144317227. The next prime is 1144317253. The reversal of 1144317247 is 7427134411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144317247 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 (1144317227) 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, 13305972 + ... + 13306057.

It is an arithmetic number, because the mean of its divisors is an integer number (292732330).

Almost surely, 2^1144317247 is an apocalyptic number.

1144317247 is a deficient number, since it is larger than the sum of its proper divisors (26612073).

1144317247 is an equidigital number, since it uses as much as digits as its factorization.

1144317247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26612072.

The product of its digits is 18816, while the sum is 34.

The square root of 1144317247 is about 33827.7585275761. The cubic root of 1144317247 is about 1045.9609749548.

The spelling of 1144317247 in words is "one billion, one hundred forty-four million, three hundred seventeen thousand, two hundred forty-seven".