10203681 has 8 divisors (see below), whose sum is σ = 14043904. Its totient is φ = 6582960.

The previous prime is 10203673. The next prime is 10203691. The reversal of 10203681 is 18630201.

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

It is not a de Polignac number, because 10203681 - 2³ = 10203673 is a prime.

It is a super-2 number, since 2×10203681² = 208230211899522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10203691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54766 + ... + 54951.

It is an arithmetic number, because the mean of its divisors is an integer number (1755488).

Almost surely, 2^10203681 is an apocalyptic number.

It is an amenable number.

10203681 is a deficient number, since it is larger than the sum of its proper divisors (3840223).

10203681 is a wasteful number, since it uses less digits than its factorization.

10203681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109751.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10203681 is about 3194.3201154549. The cubic root of 10203681 is about 216.8963736074.

Adding to 10203681 its reverse (18630201), we get a palindrome (28833882).

The spelling of 10203681 in words is "ten million, two hundred three thousand, six hundred eighty-one".