20340323 has 2 divisors, whose sum is σ = 20340324. Its totient is φ = 20340322.

The previous prime is 20340319. The next prime is 20340373. The reversal of 20340323 is 32304302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20340323 - 2² = 20340319 is a prime.

It is not a weakly prime, because it can be changed into another prime (20340373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170161 + 10170162.

It is an arithmetic number, because the mean of its divisors is an integer number (10170162).

Almost surely, 2^20340323 is an apocalyptic number.

20340323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340323 is an equidigital number, since it uses as much as digits as its factorization.

20340323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20340323 is about 4510.0247227704. The cubic root of 20340323 is about 272.9727416687.

Adding to 20340323 its reverse (32304302), we get a palindrome (52644625).

The spelling of 20340323 in words is "twenty million, three hundred forty thousand, three hundred twenty-three".