103681081 has 16 divisors (see below), whose sum is σ = 128757760. Its totient is φ = 81473040.

The previous prime is 103681051. The next prime is 103681099. The reversal of 103681081 is 180186301.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 103681081 - 2¹³ = 103672889 is a prime.

It is a super-2 number, since 2×103681081² = 21499533114657122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103681001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8451 + ... + 16696.

It is an arithmetic number, because the mean of its divisors is an integer number (8047360).

Almost surely, 2^103681081 is an apocalyptic number.

It is an amenable number.

103681081 is a deficient number, since it is larger than the sum of its proper divisors (25076679).

103681081 is a wasteful number, since it uses less digits than its factorization.

103681081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25204.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 103681081 is about 10182.3907310611. The cubic root of 103681081 is about 469.7857496398.

It can be divided in two parts, 10368 and 1081, that added together give a square (11449 = 107²).

The spelling of 103681081 in words is "one hundred three million, six hundred eighty-one thousand, eighty-one".