681011103 has 8 divisors (see below), whose sum is σ = 909042048. Its totient is φ = 453493784.

The previous prime is 681011063. The next prime is 681011113. The reversal of 681011103 is 301110186.

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 681011103 - 2⁹ = 681010591 is a prime.

It is a super-2 number, since 2×681011103² = 927552244818553218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 681011103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681011113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125301 + ... + 130622.

It is an arithmetic number, because the mean of its divisors is an integer number (113630256).

Almost surely, 2^681011103 is an apocalyptic number.

681011103 is a deficient number, since it is larger than the sum of its proper divisors (228030945).

681011103 is a wasteful number, since it uses less digits than its factorization.

681011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256813.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 681011103 is about 26096.1894344749. The cubic root of 681011103 is about 879.8015663978.

Adding to 681011103 its reverse (301110186), we get a palindrome (982121289).

The spelling of 681011103 in words is "six hundred eighty-one million, eleven thousand, one hundred three".