20324723 has 2 divisors, whose sum is σ = 20324724. Its totient is φ = 20324722.

The previous prime is 20324677. The next prime is 20324753. The reversal of 20324723 is 32742302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20324723 - 2¹⁴ = 20308339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20324753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162361 + 10162362.

It is an arithmetic number, because the mean of its divisors is an integer number (10162362).

Almost surely, 2^20324723 is an apocalyptic number.

20324723 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324723 is an equidigital number, since it uses as much as digits as its factorization.

20324723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 20324723 is about 4508.2949104955. The cubic root of 20324723 is about 272.9029383871.

The spelling of 20324723 in words is "twenty million, three hundred twenty-four thousand, seven hundred twenty-three".