20654323 has 2 divisors, whose sum is σ = 20654324. Its totient is φ = 20654322.

The previous prime is 20654287. The next prime is 20654327. The reversal of 20654323 is 32345602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20654323 - 2⁹ = 20653811 is a prime.

It is equal to p_1309435 and since 20654323 and 1309435 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20654327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10327161 + 10327162.

It is an arithmetic number, because the mean of its divisors is an integer number (10327162).

Almost surely, 2^20654323 is an apocalyptic number.

20654323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20654323 is an equidigital number, since it uses as much as digits as its factorization.

20654323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20654323 is about 4544.7027405541. The cubic root of 20654323 is about 274.3702305095.

Adding to 20654323 its reverse (32345602), we get a palindrome (52999925).

The spelling of 20654323 in words is "twenty million, six hundred fifty-four thousand, three hundred twenty-three".