340312503 has 4 divisors (see below), whose sum is σ = 453750008. Its totient is φ = 226875000.

The previous prime is 340312501. The next prime is 340312519. The reversal of 340312503 is 305213043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305213043 = 3 ⋅101737681.

It is not a de Polignac number, because 340312503 - 2¹ = 340312501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340312503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340312501) 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, 56718748 + ... + 56718753.

It is an arithmetic number, because the mean of its divisors is an integer number (113437502).

Almost surely, 2^340312503 is an apocalyptic number.

340312503 is a deficient number, since it is larger than the sum of its proper divisors (113437505).

340312503 is a wasteful number, since it uses less digits than its factorization.

340312503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113437504.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 340312503 is about 18447.5608956848. The cubic root of 340312503 is about 698.1669749655.

Adding to 340312503 its reverse (305213043), we get a palindrome (645525546).

The spelling of 340312503 in words is "three hundred forty million, three hundred twelve thousand, five hundred three".