1340001111 has 4 divisors (see below), whose sum is σ = 1786668152. Its totient is φ = 893334072.

The previous prime is 1340001109. The next prime is 1340001119. The reversal of 1340001111 is 1111000431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111000431 = 3 ⋅370333477.

It is not a de Polignac number, because 1340001111 - 2¹ = 1340001109 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 (1340001119) 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, 223333516 + ... + 223333521.

It is an arithmetic number, because the mean of its divisors is an integer number (446667038).

Almost surely, 2^1340001111 is an apocalyptic number.

1340001111 is a deficient number, since it is larger than the sum of its proper divisors (446667041).

1340001111 is an equidigital number, since it uses as much as digits as its factorization.

1340001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446667040.

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

The square root of 1340001111 is about 36606.0256105467. The cubic root of 1340001111 is about 1102.4740761383.

Adding to 1340001111 its reverse (1111000431), we get a palindrome (2451001542).

The spelling of 1340001111 in words is "one billion, three hundred forty million, one thousand, one hundred eleven".