2331124021 has 4 divisors (see below), whose sum is σ = 2360632000. Its totient is φ = 2301616044.

The previous prime is 2331124013. The next prime is 2331124039. The reversal of 2331124021 is 1204211332.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2331124021 - 2³ = 2331124013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2331124021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331124051) 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, 14753871 + ... + 14754028.

It is an arithmetic number, because the mean of its divisors is an integer number (590158000).

Almost surely, 2^2331124021 is an apocalyptic number.

It is an amenable number.

2331124021 is a deficient number, since it is larger than the sum of its proper divisors (29507979).

2331124021 is an equidigital number, since it uses as much as digits as its factorization.

2331124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29507978.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2331124021 is about 48281.7151828723. The cubic root of 2331124021 is about 1325.9336523369.

Adding to 2331124021 its reverse (1204211332), we get a palindrome (3535335353).

The spelling of 2331124021 in words is "two billion, three hundred thirty-one million, one hundred twenty-four thousand, twenty-one".