163106405220331 has 4 divisors (see below), whose sum is σ = 163110465765000. Its totient is φ = 163102344675664.

The previous prime is 163106405220313. The next prime is 163106405220347. The reversal of 163106405220331 is 133022504601361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163106405220331 - 2¹⁷ = 163106405089259 is a prime.

It is a super-2 number, since 2×163106405220331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163106405220301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030212081 + ... + 2030292418.

It is an arithmetic number, because the mean of its divisors is an integer number (40777616441250).

Almost surely, 2^{163106405220331} is an apocalyptic number.

163106405220331 is a deficient number, since it is larger than the sum of its proper divisors (4060544669).

163106405220331 is an equidigital number, since it uses as much as digits as its factorization.

163106405220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060544668.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 163106405220331 its reverse (133022504601361), we get a palindrome (296128909821692).

The spelling of 163106405220331 in words is "one hundred sixty-three trillion, one hundred six billion, four hundred five million, two hundred twenty thousand, three hundred thirty-one".