1340312146 has 8 divisors (see below), whose sum is σ = 2013954300. Its totient is φ = 668994048.

The previous prime is 1340312123. The next prime is 1340312159. The reversal of 1340312146 is 6412130431.

It can be written as a sum of positive squares in 2 ways, for example, as 1336268025 + 4044121 = 36555^2 + 2011^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1340312146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579571 + ... + 581878.

Almost surely, 2^1340312146 is an apocalyptic number.

1340312146 is a deficient number, since it is larger than the sum of its proper divisors (673642154).

1340312146 is a wasteful number, since it uses less digits than its factorization.

1340312146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162028.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1340312146 is about 36610.2737766327. The cubic root of 1340312146 is about 1102.5593699721.

Adding to 1340312146 its reverse (6412130431), we get a palindrome (7752442577).

The spelling of 1340312146 in words is "one billion, three hundred forty million, three hundred twelve thousand, one hundred forty-six".