1340312455 has 8 divisors (see below), whose sum is σ = 1613450592. Its totient is φ = 1068866208.

The previous prime is 1340312443. The next prime is 1340312461. The reversal of 1340312455 is 5542130431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340312455 - 2⁵ = 1340312423 is a prime.

It is a Duffinian number.

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, 421227 + ... + 424396.

It is an arithmetic number, because the mean of its divisors is an integer number (201681324).

Almost surely, 2^1340312455 is an apocalyptic number.

1340312455 is a deficient number, since it is larger than the sum of its proper divisors (273138137).

1340312455 is an equidigital number, since it uses as much as digits as its factorization.

1340312455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845945.

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

The square root of 1340312455 is about 36610.2779967593. The cubic root of 1340312455 is about 1102.5594547013.

Adding to 1340312455 its reverse (5542130431), we get a palindrome (6882442886).

The spelling of 1340312455 in words is "one billion, three hundred forty million, three hundred twelve thousand, four hundred fifty-five".