1340145311 has 12 divisors (see below), whose sum is σ = 1376732136. Its totient is φ = 1304508480.

The previous prime is 1340145281. The next prime is 1340145337. The reversal of 1340145311 is 1135410431.

It is a happy number.

It is not a de Polignac number, because 1340145311 - 2¹⁰ = 1340144287 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 (1340145211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1322441 + ... + 1323453.

It is an arithmetic number, because the mean of its divisors is an integer number (114727678).

Almost surely, 2^1340145311 is an apocalyptic number.

1340145311 is a deficient number, since it is larger than the sum of its proper divisors (36586825).

1340145311 is an equidigital number, since it uses as much as digits as its factorization.

1340145311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1340145311 is about 36607.9951786492. The cubic root of 1340145311 is about 1102.5136211452.

Adding to 1340145311 its reverse (1135410431), we get a palindrome (2475555742).

The spelling of 1340145311 in words is "one billion, three hundred forty million, one hundred forty-five thousand, three hundred eleven".