103890481 has 4 divisors (see below), whose sum is σ = 104034112. Its totient is φ = 103746852.

The previous prime is 103890469. The next prime is 103890509. The reversal of 103890481 is 184098301.

It is a happy number.

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 103890481 - 2¹⁵ = 103857713 is a prime.

It is a super-2 number, since 2×103890481² = 21586464084822722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103890421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70725 + ... + 72178.

It is an arithmetic number, because the mean of its divisors is an integer number (26008528).

Almost surely, 2^103890481 is an apocalyptic number.

It is an amenable number.

103890481 is a deficient number, since it is larger than the sum of its proper divisors (143631).

103890481 is an equidigital number, since it uses as much as digits as its factorization.

103890481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143630.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 103890481 is about 10192.6680020493. The cubic root of 103890481 is about 470.1018053195.

It can be divided in two parts, 1038 and 90481, that added together give a palindrome (91519).

The spelling of 103890481 in words is "one hundred three million, eight hundred ninety thousand, four hundred eighty-one".