1340111011 has 4 divisors (see below), whose sum is σ = 1340189712. Its totient is φ = 1340032312.

The previous prime is 1340111009. The next prime is 1340111033. The reversal of 1340111011 is 1101110431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1101110431 = 3359 ⋅327809.

It is a cyclic number.

It is not a de Polignac number, because 1340111011 - 2¹ = 1340111009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340110982 and 1340111000.

It is not an unprimeable number, because it can be changed into a prime (1340111051) 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, 1975 + ... + 51808.

It is an arithmetic number, because the mean of its divisors is an integer number (335047428).

Almost surely, 2^1340111011 is an apocalyptic number.

1340111011 is a deficient number, since it is larger than the sum of its proper divisors (78701).

1340111011 is an equidigital number, since it uses as much as digits as its factorization.

1340111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78700.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1340111011 is about 36607.5266987542. The cubic root of 1340111011 is about 1102.5042150657.

Adding to 1340111011 its reverse (1101110431), we get a palindrome (2441221442).

The spelling of 1340111011 in words is "one billion, three hundred forty million, one hundred eleven thousand, eleven".