340423203 has 16 divisors (see below), whose sum is σ = 461223936. Its totient is φ = 223298880.

The previous prime is 340423201. The next prime is 340423211. The reversal of 340423203 is 302324043.

It is not a de Polignac number, because 340423203 - 2¹ = 340423201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340423203.

It is not an unprimeable number, because it can be changed into a prime (340423201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127975 + ... + 130607.

It is an arithmetic number, because the mean of its divisors is an integer number (28826496).

Almost surely, 2^340423203 is an apocalyptic number.

340423203 is a deficient number, since it is larger than the sum of its proper divisors (120800733).

340423203 is a wasteful number, since it uses less digits than its factorization.

340423203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 340423203 is about 18450.5610483801. The cubic root of 340423203 is about 698.2426688300.

Adding to 340423203 its reverse (302324043), we get a palindrome (642747246).

The spelling of 340423203 in words is "three hundred forty million, four hundred twenty-three thousand, two hundred three".