1340144223 has 8 divisors (see below), whose sum is σ = 1949300736. Its totient is φ = 812208600.

The previous prime is 1340144191. The next prime is 1340144237. The reversal of 1340144223 is 3224410431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340144223 - 2⁵ = 1340144191 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1340144193 and 1340144202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340144263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20305183 + ... + 20305248.

It is an arithmetic number, because the mean of its divisors is an integer number (243662592).

Almost surely, 2^1340144223 is an apocalyptic number.

1340144223 is a deficient number, since it is larger than the sum of its proper divisors (609156513).

1340144223 is a wasteful number, since it uses less digits than its factorization.

1340144223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40610445.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1340144223 is about 36607.9803185043. The cubic root of 1340144223 is about 1102.5133227857.

Adding to 1340144223 its reverse (3224410431), we get a palindrome (4564554654).

The spelling of 1340144223 in words is "one billion, three hundred forty million, one hundred forty-four thousand, two hundred twenty-three".