163313306 has 8 divisors (see below), whose sum is σ = 263813844. Its totient is φ = 75375360.

The previous prime is 163313281. The next prime is 163313323. The reversal of 163313306 is 603313361.

It can be written as a sum of positive squares in 2 ways, for example, as 156475081 + 6838225 = 12509^2 + 2615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 6281281 = 163313306 / (1 + 6 + 3 + 3 + 1 + 3 + 3 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3140615 + ... + 3140666.

Almost surely, 2^163313306 is an apocalyptic number.

163313306 is a deficient number, since it is larger than the sum of its proper divisors (100500538).

163313306 is a wasteful number, since it uses less digits than its factorization.

163313306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281296.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 163313306 is about 12779.4094542745. The cubic root of 163313306 is about 546.6053231947.

Adding to 163313306 its reverse (603313361), we get a palindrome (766626667).

The spelling of 163313306 in words is "one hundred sixty-three million, three hundred thirteen thousand, three hundred six".