2343232721 has 2 divisors, whose sum is σ = 2343232722. Its totient is φ = 2343232720.

The previous prime is 2343232699. The next prime is 2343232747. The reversal of 2343232721 is 1272323432.

It is a happy number.

2343232721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2263380625 + 79852096 = 47575^2 + 8936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2343232721 - 2⁶ = 2343232657 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2343232321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1171616360 + 1171616361.

It is an arithmetic number, because the mean of its divisors is an integer number (1171616361).

Almost surely, 2^2343232721 is an apocalyptic number.

It is an amenable number.

2343232721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2343232721 is an equidigital number, since it uses as much as digits as its factorization.

2343232721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 29.

The square root of 2343232721 is about 48406.9490982441. The cubic root of 2343232721 is about 1328.2254814504.

The spelling of 2343232721 in words is "two billion, three hundred forty-three million, two hundred thirty-two thousand, seven hundred twenty-one".