340040303 has 4 divisors (see below), whose sum is σ = 354824688. Its totient is φ = 325255920.

The previous prime is 340040297. The next prime is 340040317. The reversal of 340040303 is 303040043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340040303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340040353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7392158 + ... + 7392203.

It is an arithmetic number, because the mean of its divisors is an integer number (88706172).

Almost surely, 2^340040303 is an apocalyptic number.

340040303 is a deficient number, since it is larger than the sum of its proper divisors (14784385).

340040303 is a wasteful number, since it uses less digits than its factorization.

340040303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14784384.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 340040303 is about 18440.1817507312. The cubic root of 340040303 is about 697.9807816483.

Adding to 340040303 its reverse (303040043), we get a palindrome (643080346).

The spelling of 340040303 in words is "three hundred forty million, forty thousand, three hundred three".