103120305 has 8 divisors (see below), whose sum is σ = 164992512. Its totient is φ = 54997488.

The previous prime is 103120301. The next prime is 103120307. The reversal of 103120305 is 503021301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103120305 - 2² = 103120301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 6874687 = 103120305 / (1 + 0 + 3 + 1 + 2 + 0 + 3 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (103120301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3437329 + ... + 3437358.

It is an arithmetic number, because the mean of its divisors is an integer number (20624064).

Almost surely, 2^103120305 is an apocalyptic number.

103120305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103120305 is a deficient number, since it is larger than the sum of its proper divisors (61872207).

103120305 is an equidigital number, since it uses as much as digits as its factorization.

103120305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6874695.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 103120305 is about 10154.8168373437. The cubic root of 103120305 is about 468.9372471477.

Adding to 103120305 its reverse (503021301), we get a palindrome (606141606).

The spelling of 103120305 in words is "one hundred three million, one hundred twenty thousand, three hundred five".