16121303 has 16 divisors (see below), whose sum is σ = 18416160. Its totient is φ = 13977600.

The previous prime is 16121279. The next prime is 16121309. The reversal of 16121303 is 30312161.

It is a cyclic number.

It is not a de Polignac number, because 16121303 - 2⁶ = 16121239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30683 + ... + 31203.

It is an arithmetic number, because the mean of its divisors is an integer number (1151010).

Almost surely, 2^16121303 is an apocalyptic number.

16121303 is a deficient number, since it is larger than the sum of its proper divisors (2294857).

16121303 is a wasteful number, since it uses less digits than its factorization.

16121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

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

The square root of 16121303 is about 4015.1342443311. The cubic root of 16121303 is about 252.6194082808.

Adding to 16121303 its reverse (30312161), we get a palindrome (46433464).

The spelling of 16121303 in words is "sixteen million, one hundred twenty-one thousand, three hundred three".