103243281 has 4 divisors (see below), whose sum is σ = 137657712. Its totient is φ = 68828852.

The previous prime is 103243271. The next prime is 103243307. The reversal of 103243281 is 182342301.

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, and also an emirpimes, since its reverse is a distinct semiprime: 182342301 = 3 ⋅60780767.

It is a cyclic number.

It is not a de Polignac number, because 103243281 - 2⁵ = 103243249 is a prime.

It is a super-2 number, since 2×103243281² = 21318350143289922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103243201) 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, 17207211 + ... + 17207216.

It is an arithmetic number, because the mean of its divisors is an integer number (34414428).

Almost surely, 2^103243281 is an apocalyptic number.

It is an amenable number.

103243281 is a deficient number, since it is larger than the sum of its proper divisors (34414431).

103243281 is an equidigital number, since it uses as much as digits as its factorization.

103243281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414430.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 103243281 is about 10160.8700906960. The cubic root of 103243281 is about 469.1235832856.

Adding to 103243281 its reverse (182342301), we get a palindrome (285585582).

The spelling of 103243281 in words is "one hundred three million, two hundred forty-three thousand, two hundred eighty-one".