103121306 has 8 divisors (see below), whose sum is σ = 154904724. Its totient is φ = 51486400.

The previous prime is 103121299. The next prime is 103121329. The reversal of 103121306 is 603121301.

It can be written as a sum of positive squares in 2 ways, for example, as 100180081 + 2941225 = 10009^2 + 1715^2 .

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

It is a super-2 number, since 2×103121306² = 21268007502291272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35375 + ... + 38178.

Almost surely, 2^103121306 is an apocalyptic number.

103121306 is a deficient number, since it is larger than the sum of its proper divisors (51783418).

103121306 is an equidigital number, since it uses as much as digits as its factorization.

103121306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74256.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 103121306 is about 10154.8661241791. The cubic root of 103121306 is about 468.9387644844.

Adding to 103121306 its reverse (603121301), we get a palindrome (706242607).

The spelling of 103121306 in words is "one hundred three million, one hundred twenty-one thousand, three hundred six".