2423331821 has 2 divisors, whose sum is σ = 2423331822. Its totient is φ = 2423331820.

The previous prime is 2423331787. The next prime is 2423331851. The reversal of 2423331821 is 1281333242.

2423331821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1487644900 + 935686921 = 38570^2 + 30589^2 .

It is a cyclic number.

It is not a de Polignac number, because 2423331821 - 2¹⁰ = 2423330797 is a prime.

It is a super-2 number, since 2×2423331821² = 11745074229342352082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2423331851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211665910 + 1211665911.

It is an arithmetic number, because the mean of its divisors is an integer number (1211665911).

Almost surely, 2^2423331821 is an apocalyptic number.

It is an amenable number.

2423331821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2423331821 is an equidigital number, since it uses as much as digits as its factorization.

2423331821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 2423331821 is about 49227.3483035599. The cubic root of 2423331821 is about 1343.1905521713.

The spelling of 2423331821 in words is "two billion, four hundred twenty-three million, three hundred thirty-one thousand, eight hundred twenty-one".