103121443 has 4 divisors (see below), whose sum is σ = 107605008. Its totient is φ = 98637880.

The previous prime is 103121429. The next prime is 103121467. The reversal of 103121443 is 344121301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344121301 = 1489 ⋅231109.

It is a cyclic number.

It is not a de Polignac number, because 103121443 - 2⁹ = 103120931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103121443.

It is not an unprimeable number, because it can be changed into a prime (103121743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241748 + ... + 2241793.

It is an arithmetic number, because the mean of its divisors is an integer number (26901252).

Almost surely, 2^103121443 is an apocalyptic number.

103121443 is a deficient number, since it is larger than the sum of its proper divisors (4483565).

103121443 is an equidigital number, since it uses as much as digits as its factorization.

103121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483564.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 103121443 is about 10154.8728697114. The cubic root of 103121443 is about 468.9389721511.

Adding to 103121443 its reverse (344121301), we get a palindrome (447242744).

The spelling of 103121443 in words is "one hundred three million, one hundred twenty-one thousand, four hundred forty-three".