1340431415 has 8 divisors (see below), whose sum is σ = 1608756768. Its totient is φ = 1072185760.

The previous prime is 1340431387. The next prime is 1340431429. The reversal of 1340431415 is 5141340431.

It is a happy number.

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

It is not a de Polignac number, because 1340431415 - 2¹⁰ = 1340430391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27230 + ... + 58500.

It is an arithmetic number, because the mean of its divisors is an integer number (201094596).

Almost surely, 2^1340431415 is an apocalyptic number.

1340431415 is a deficient number, since it is larger than the sum of its proper divisors (268325353).

1340431415 is an equidigital number, since it uses as much as digits as its factorization.

1340431415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39849.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1340431415 is about 36611.9026410811. The cubic root of 1340431415 is about 1102.5920731136.

Adding to 1340431415 its reverse (5141340431), we get a palindrome (6481771846).

The spelling of 1340431415 in words is "one billion, three hundred forty million, four hundred thirty-one thousand, four hundred fifteen".