3123211103 has 4 divisors (see below), whose sum is σ = 3123726648. Its totient is φ = 3122695560.

The previous prime is 3123211099. The next prime is 3123211109. The reversal of 3123211103 is 3011123213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3123211103 - 2² = 3123211099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123211109) 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, 248576 + ... + 260837.

It is an arithmetic number, because the mean of its divisors is an integer number (780931662).

Almost surely, 2^3123211103 is an apocalyptic number.

3123211103 is a deficient number, since it is larger than the sum of its proper divisors (515545).

3123211103 is an equidigital number, since it uses as much as digits as its factorization.

3123211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515544.

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

The square root of 3123211103 is about 55885.6967658094. The cubic root of 3123211103 is about 1461.7298416403.

Adding to 3123211103 its reverse (3011123213), we get a palindrome (6134334316).

The spelling of 3123211103 in words is "three billion, one hundred twenty-three million, two hundred eleven thousand, one hundred three".