340012403 has 4 divisors (see below), whose sum is σ = 340470768. Its totient is φ = 339554040.

The previous prime is 340012357. The next prime is 340012417. The reversal of 340012403 is 304210043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340012403 - 2¹² = 340008307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340012483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228068 + ... + 229553.

It is an arithmetic number, because the mean of its divisors is an integer number (85117692).

Almost surely, 2^340012403 is an apocalyptic number.

340012403 is a deficient number, since it is larger than the sum of its proper divisors (458365).

340012403 is an equidigital number, since it uses as much as digits as its factorization.

340012403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458364.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 340012403 is about 18439.4252350771. The cubic root of 340012403 is about 697.9616915618.

Adding to 340012403 its reverse (304210043), we get a palindrome (644222446).

The spelling of 340012403 in words is "three hundred forty million, twelve thousand, four hundred three".