3123033023021 has 4 divisors (see below), whose sum is σ = 3123041543292. Its totient is φ = 3123024502752.

The previous prime is 3123033022933. The next prime is 3123033023023. The reversal of 3123033023021 is 1203203303213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 840909174121 + 2282123848900 = 917011^2 + 1510670^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123033023021 - 2¹⁴ = 3123033006637 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 (3123033023023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3684386 + ... + 4452051.

It is an arithmetic number, because the mean of its divisors is an integer number (780760385823).

Almost surely, 2^{3123033023021} is an apocalyptic number.

It is an amenable number.

3123033023021 is a deficient number, since it is larger than the sum of its proper divisors (8520271).

3123033023021 is an equidigital number, since it uses as much as digits as its factorization.

3123033023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520270.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 3123033023021 its reverse (1203203303213), we get a palindrome (4326236326234).

The spelling of 3123033023021 in words is "three trillion, one hundred twenty-three billion, thirty-three million, twenty-three thousand, twenty-one".