2421731723 has 2 divisors, whose sum is σ = 2421731724. Its totient is φ = 2421731722.

The previous prime is 2421731713. The next prime is 2421731761. The reversal of 2421731723 is 3271371242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2421731723 - 2⁸ = 2421731467 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2421731723.

It is not a weakly prime, because it can be changed into another prime (2421731713) 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, 1210865861 + 1210865862.

It is an arithmetic number, because the mean of its divisors is an integer number (1210865862).

Almost surely, 2^2421731723 is an apocalyptic number.

2421731723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421731723 is an equidigital number, since it uses as much as digits as its factorization.

2421731723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 32.

The square root of 2421731723 is about 49211.0934952679. The cubic root of 2421731723 is about 1342.8948560131.

The spelling of 2421731723 in words is "two billion, four hundred twenty-one million, seven hundred thirty-one thousand, seven hundred twenty-three".