1340111523 has 8 divisors (see below), whose sum is σ = 1809433600. Its totient is φ = 882098568.

The previous prime is 1340111453. The next prime is 1340111533. The reversal of 1340111523 is 3251110431.

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

It is not a de Polignac number, because 1340111523 - 2¹⁷ = 1339980451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340111523.

It is not an unprimeable number, because it can be changed into a prime (1340111533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2827003 + ... + 2827476.

It is an arithmetic number, because the mean of its divisors is an integer number (226179200).

Almost surely, 2^1340111523 is an apocalyptic number.

1340111523 is a deficient number, since it is larger than the sum of its proper divisors (469322077).

1340111523 is an equidigital number, since it uses as much as digits as its factorization.

1340111523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5654561.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1340111523 is about 36607.5336918509. The cubic root of 1340111523 is about 1102.5043554725.

Adding to 1340111523 its reverse (3251110431), we get a palindrome (4591221954).

The spelling of 1340111523 in words is "one billion, three hundred forty million, one hundred eleven thousand, five hundred twenty-three".