1340506503 has 40 divisors (see below), whose sum is σ = 2305392672. Its totient is φ = 760368384.

The previous prime is 1340506501. The next prime is 1340506507. The reversal of 1340506503 is 3056050431.

1340506503 is a `hidden beast` number, since 1 + 3 + 4 + 0 + 5 + 0 + 650 + 3 = 666.

1340506503 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1340506503 - 2¹ = 1340506501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340506501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69051 + ... + 86307.

Almost surely, 2^1340506503 is an apocalyptic number.

1340506503 is a deficient number, since it is larger than the sum of its proper divisors (964886169).

1340506503 is a wasteful number, since it uses less digits than its factorization.

1340506503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17413 (or 17404 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1340506503 is about 36612.9280855820. The cubic root of 1340506503 is about 1102.6126609847.

Adding to 1340506503 its reverse (3056050431), we get a palindrome (4396556934).

The spelling of 1340506503 in words is "one billion, three hundred forty million, five hundred six thousand, five hundred three".