103440681 has 12 divisors (see below), whose sum is σ = 151519680. Its totient is φ = 67988760.

The previous prime is 103440619. The next prime is 103440713. The reversal of 103440681 is 186044301.

It is not a de Polignac number, because 103440681 - 2¹⁰ = 103439657 is a prime.

It is a super-2 number, since 2×103440681² = 21399948971487522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103440481) 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 11 ways as a sum of consecutive naturals, for example, 80301 + ... + 81578.

It is an arithmetic number, because the mean of its divisors is an integer number (12626640).

Almost surely, 2^103440681 is an apocalyptic number.

It is an amenable number.

103440681 is a deficient number, since it is larger than the sum of its proper divisors (48078999).

103440681 is a wasteful number, since it uses less digits than its factorization.

103440681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161956 (or 161953 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 103440681 is about 10170.5791870473. The cubic root of 103440681 is about 469.4223792852.

Adding to 103440681 its reverse (186044301), we get a palindrome (289484982).

The spelling of 103440681 in words is "one hundred three million, four hundred forty thousand, six hundred eighty-one".