3123120020123 has 4 divisors (see below), whose sum is σ = 3125159943288. Its totient is φ = 3121080096960.

The previous prime is 3123120020101. The next prime is 3123120020161. The reversal of 3123120020123 is 3210200213213.

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 3123120020123 - 2¹⁰ = 3123120019099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3123120020095 and 3123120020104.

It is not an unprimeable number, because it can be changed into a prime (3123120020173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019959286 + ... + 1019962347.

It is an arithmetic number, because the mean of its divisors is an integer number (781289985822).

Almost surely, 2^{3123120020123} is an apocalyptic number.

3123120020123 is a deficient number, since it is larger than the sum of its proper divisors (2039923165).

3123120020123 is a wasteful number, since it uses less digits than its factorization.

3123120020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039923164.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 3123120020123 its reverse (3210200213213), we get a palindrome (6333320233336).

The spelling of 3123120020123 in words is "three trillion, one hundred twenty-three billion, one hundred twenty million, twenty thousand, one hundred twenty-three".