163213601 has 4 divisors (see below), whose sum is σ = 163242672. Its totient is φ = 163184532.

The previous prime is 163213577. The next prime is 163213649. The reversal of 163213601 is 106312361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106312361 = 31 ⋅3429431.

It is a cyclic number.

It is not a de Polignac number, because 163213601 - 2¹⁸ = 162951457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163213691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3131 + ... + 18336.

It is an arithmetic number, because the mean of its divisors is an integer number (40810668).

Almost surely, 2^163213601 is an apocalyptic number.

It is an amenable number.

163213601 is a deficient number, since it is larger than the sum of its proper divisors (29071).

163213601 is an equidigital number, since it uses as much as digits as its factorization.

163213601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29070.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 163213601 is about 12775.5078568329. The cubic root of 163213601 is about 546.4940638823.

Adding to 163213601 its reverse (106312361), we get a palindrome (269525962).

The spelling of 163213601 in words is "one hundred sixty-three million, two hundred thirteen thousand, six hundred one".