3123020203 has 4 divisors (see below), whose sum is σ = 3143702608. Its totient is φ = 3102337800.

The previous prime is 3123020191. The next prime is 3123020269. The reversal of 3123020203 is 3020203213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020203213 = 41 ⋅73663493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123020203 is a prime.

It is a super-2 number, since 2×3123020203² = 19506510376692322418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123020903) 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, 10340976 + ... + 10341277.

It is an arithmetic number, because the mean of its divisors is an integer number (785925652).

Almost surely, 2^3123020203 is an apocalyptic number.

3123020203 is a deficient number, since it is larger than the sum of its proper divisors (20682405).

3123020203 is a wasteful number, since it uses less digits than its factorization.

3123020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20682404.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 3123020203 is about 55883.9887892767. The cubic root of 3123020203 is about 1461.7000592675.

Adding to 3123020203 its reverse (3020203213), we get a palindrome (6143223416).

The spelling of 3123020203 in words is "three billion, one hundred twenty-three million, twenty thousand, two hundred three".