681303203 has 12 divisors (see below), whose sum is σ = 839157192. Its totient is φ = 549622080.

The previous prime is 681303179. The next prime is 681303221. The reversal of 681303203 is 302303186.

It is not a de Polignac number, because 681303203 - 2¹⁰ = 681302179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681309203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408113 + ... + 409778.

It is an arithmetic number, because the mean of its divisors is an integer number (69929766).

Almost surely, 2^681303203 is an apocalyptic number.

681303203 is a deficient number, since it is larger than the sum of its proper divisors (157853989).

681303203 is a wasteful number, since it uses less digits than its factorization.

681303203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817922 (or 817915 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 681303203 is about 26101.7854370156. The cubic root of 681303203 is about 879.9273368894.

Adding to 681303203 its reverse (302303186), we get a palindrome (983606389).

The spelling of 681303203 in words is "six hundred eighty-one million, three hundred three thousand, two hundred three".