203453315542 has 8 divisors (see below), whose sum is σ = 305185910256. Its totient is φ = 101724678792.

The previous prime is 203453315531. The next prime is 203453315599. The reversal of 203453315542 is 245513354302.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857458 + ... + 1068709.

It is an arithmetic number, because the mean of its divisors is an integer number (38148238782).

Almost surely, 2^203453315542 is an apocalyptic number.

203453315542 is a deficient number, since it is larger than the sum of its proper divisors (101732594714).

203453315542 is a wasteful number, since it uses less digits than its factorization.

203453315542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978982.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 203453315542 its reverse (245513354302), we get a palindrome (448966669844).

The spelling of 203453315542 in words is "two hundred three billion, four hundred fifty-three million, three hundred fifteen thousand, five hundred forty-two".