163321427 has 2 divisors, whose sum is σ = 163321428. Its totient is φ = 163321426.

The previous prime is 163321421. The next prime is 163321453. The reversal of 163321427 is 724123361.

It is a happy number.

163321427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163321427 - 2¹⁰ = 163320403 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163321427.

It is not a weakly prime, because it can be changed into another prime (163321421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81660713 + 81660714.

It is an arithmetic number, because the mean of its divisors is an integer number (81660714).

Almost surely, 2^163321427 is an apocalyptic number.

163321427 is a deficient number, since it is larger than the sum of its proper divisors (1).

163321427 is an equidigital number, since it uses as much as digits as its factorization.

163321427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 163321427 is about 12779.7271880115. The cubic root of 163321427 is about 546.6143833020.

Adding to 163321427 its reverse (724123361), we get a palindrome (887444788).

The spelling of 163321427 in words is "one hundred sixty-three million, three hundred twenty-one thousand, four hundred twenty-seven".