20422343 has 2 divisors, whose sum is σ = 20422344. Its totient is φ = 20422342.

The previous prime is 20422313. The next prime is 20422357. The reversal of 20422343 is 34322402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20422343 - 2¹² = 20418247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20422313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211171 + 10211172.

It is an arithmetic number, because the mean of its divisors is an integer number (10211172).

Almost surely, 2^20422343 is an apocalyptic number.

20422343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422343 is an equidigital number, since it uses as much as digits as its factorization.

20422343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20422343 is about 4519.1086510506. The cubic root of 20422343 is about 273.3391599326.

Adding to 20422343 its reverse (34322402), we get a palindrome (54744745).

The spelling of 20422343 in words is "twenty million, four hundred twenty-two thousand, three hundred forty-three".