2339243021 has 2 divisors, whose sum is σ = 2339243022. Its totient is φ = 2339243020.

The previous prime is 2339242967. The next prime is 2339243029. The reversal of 2339243021 is 1203429332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1746320521 + 592922500 = 41789^2 + 24350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2339243021 - 2¹⁰ = 2339241997 is a prime.

It is a super-2 number, since 2×2339243021² = 10944115822594412882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2339243029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1169621510 + 1169621511.

It is an arithmetic number, because the mean of its divisors is an integer number (1169621511).

Almost surely, 2^2339243021 is an apocalyptic number.

It is an amenable number.

2339243021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2339243021 is an equidigital number, since it uses as much as digits as its factorization.

2339243021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 2339243021 is about 48365.7215494610. The cubic root of 2339243021 is about 1327.4712198167.

The spelling of 2339243021 in words is "two billion, three hundred thirty-nine million, two hundred forty-three thousand, twenty-one".