3123120023 has 4 divisors (see below), whose sum is σ = 3123867648. Its totient is φ = 3122372400.

The previous prime is 3123119981. The next prime is 3123120043. The reversal of 3123120023 is 3200213213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3123120023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3123119983 and 3123120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123120043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367511 + ... + 375912.

It is an arithmetic number, because the mean of its divisors is an integer number (780966912).

Almost surely, 2^3123120023 is an apocalyptic number.

3123120023 is a deficient number, since it is larger than the sum of its proper divisors (747625).

3123120023 is an equidigital number, since it uses as much as digits as its factorization.

3123120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747624.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3123120023 is about 55884.8818823123. The cubic root of 3123120023 is about 1461.7156323705.

Adding to 3123120023 its reverse (3200213213), we get a palindrome (6323333236).

The spelling of 3123120023 in words is "three billion, one hundred twenty-three million, one hundred twenty thousand, twenty-three".