103281661 has 24 divisors (see below), whose sum is σ = 126633024. Its totient is φ = 83825280.

The previous prime is 103281653. The next prime is 103281671. The reversal of 103281661 is 166182301.

It is not a de Polignac number, because 103281661 - 2³ = 103281653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103281671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126946 + ... + 127756.

It is an arithmetic number, because the mean of its divisors is an integer number (5276376).

Almost surely, 2^103281661 is an apocalyptic number.

It is an amenable number.

103281661 is a deficient number, since it is larger than the sum of its proper divisors (23351363).

103281661 is a wasteful number, since it uses less digits than its factorization.

103281661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 103281661 is about 10162.7585329968. The cubic root of 103281661 is about 469.1817072698.

The spelling of 103281661 in words is "one hundred three million, two hundred eighty-one thousand, six hundred sixty-one".