3023131120021 has 4 divisors (see below), whose sum is σ = 3023186140044. Its totient is φ = 3023076100000.

The previous prime is 3023131120003. The next prime is 3023131120043. The reversal of 3023131120021 is 1200211313203.

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 141913437796 + 2881217682225 = 376714^2 + 1697415^2 .

It is a cyclic number.

It is not a de Polignac number, because 3023131120021 - 2⁹ = 3023131119509 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 (3023131120421) 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, 27427510 + ... + 27537511.

It is an arithmetic number, because the mean of its divisors is an integer number (755796535011).

Almost surely, 2^{3023131120021} is an apocalyptic number.

It is an amenable number.

3023131120021 is a deficient number, since it is larger than the sum of its proper divisors (55020023).

3023131120021 is an equidigital number, since it uses as much as digits as its factorization.

3023131120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55020022.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3023131120021 its reverse (1200211313203), we get a palindrome (4223342433224).

The spelling of 3023131120021 in words is "three trillion, twenty-three billion, one hundred thirty-one million, one hundred twenty thousand, twenty-one".