9780103681 has 4 divisors (see below), whose sum is σ = 10294846000. Its totient is φ = 9265361364.

The previous prime is 9780103649. The next prime is 9780103721. The reversal of 9780103681 is 1863010879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9780103681 - 2⁵ = 9780103649 is a prime.

It is a super-2 number, since 2×9780103681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9780103381) 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, 257371131 + ... + 257371168.

It is an arithmetic number, because the mean of its divisors is an integer number (2573711500).

Almost surely, 2^9780103681 is an apocalyptic number.

It is an amenable number.

9780103681 is a deficient number, since it is larger than the sum of its proper divisors (514742319).

9780103681 is a wasteful number, since it uses less digits than its factorization.

9780103681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514742318.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9780103681 is about 98894.4067225240. The cubic root of 9780103681 is about 2138.5257614281.

The spelling of 9780103681 in words is "nine billion, seven hundred eighty million, one hundred three thousand, six hundred eighty-one".