203402344343403 has 8 divisors (see below), whose sum is σ = 276320165900688. Its totient is φ = 133043042840864.

The previous prime is 203402344343357. The next prime is 203402344343413. The reversal of 203402344343403 is 304343443204302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203402344343403 - 2⁶ = 203402344343339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203402344343413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639630013500 + ... + 639630013817.

It is an arithmetic number, because the mean of its divisors is an integer number (34540020737586).

Almost surely, 2^{203402344343403} is an apocalyptic number.

203402344343403 is a deficient number, since it is larger than the sum of its proper divisors (72917821557285).

203402344343403 is a wasteful number, since it uses less digits than its factorization.

203402344343403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279260027373.

The product of its (nonzero) digits is 995328, while the sum is 39.

Adding to 203402344343403 its reverse (304343443204302), we get a palindrome (507745787547705).

The spelling of 203402344343403 in words is "two hundred three trillion, four hundred two billion, three hundred forty-four million, three hundred forty-three thousand, four hundred three".