1340315452 has 12 divisors (see below), whose sum is σ = 2680630960. Its totient is φ = 574420896.

The previous prime is 1340315443. The next prime is 1340315453. The reversal of 1340315452 is 2545130431.

1340315452 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 47868409 = 1340315452 / (1 + 3 + 4 + 0 + 3 + 1 + 5 + 4 + 5 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 1340315452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340315453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23934177 + ... + 23934232.

Almost surely, 2^1340315452 is an apocalyptic number.

It is an amenable number.

1340315452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1340315452 is a wasteful number, since it uses less digits than its factorization.

1340315452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47868420 (or 47868418 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1340315452 is about 36610.3189278651. The cubic root of 1340315452 is about 1102.5602764919.

Adding to 1340315452 its reverse (2545130431), we get a palindrome (3885445883).

The spelling of 1340315452 in words is "one billion, three hundred forty million, three hundred fifteen thousand, four hundred fifty-two".