83121103 has 16 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 72651744.

The previous prime is 83121083. The next prime is 83121113. The reversal of 83121103 is 30112138.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83121103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83121113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29448 + ... + 32146.

It is an arithmetic number, because the mean of its divisors is an integer number (5896800).

Almost surely, 2^83121103 is an apocalyptic number.

83121103 is a deficient number, since it is larger than the sum of its proper divisors (11227697).

83121103 is a wasteful number, since it uses less digits than its factorization.

83121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 83121103 is about 9117.0775471091. The cubic root of 83121103 is about 436.4191165951.

The spelling of 83121103 in words is "eighty-three million, one hundred twenty-one thousand, one hundred three".