1340312344 has 32 divisors (see below), whose sum is σ = 2876522400. Its totient is φ = 573534720.

The previous prime is 1340312299. The next prime is 1340312353. The reversal of 1340312344 is 4432130431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18912 + ... + 55120.

It is an arithmetic number, because the mean of its divisors is an integer number (89891325).

Almost surely, 2^1340312344 is an apocalyptic number.

1340312344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340312344 is an abundant number, since it is smaller than the sum of its proper divisors (1536210056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340312344 is a wasteful number, since it uses less digits than its factorization.

1340312344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36883 (or 36879 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1340312344 is about 36610.2764807916. The cubic root of 1340312344 is about 1102.5594242646.

Adding to 1340312344 its reverse (4432130431), we get a palindrome (5772442775).

The spelling of 1340312344 in words is "one billion, three hundred forty million, three hundred twelve thousand, three hundred forty-four".