163431602 has 8 divisors (see below), whose sum is σ = 245331612. Its totient is φ = 81654400.

The previous prime is 163431533. The next prime is 163431637. The reversal of 163431602 is 206134361.

It can be written as a sum of positive squares in 2 ways, for example, as 157226521 + 6205081 = 12539^2 + 2491^2 .

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

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, 27299 + ... + 32742.

Almost surely, 2^163431602 is an apocalyptic number.

163431602 is a deficient number, since it is larger than the sum of its proper divisors (81900010).

163431602 is a wasteful number, since it uses less digits than its factorization.

163431602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61404.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 163431602 is about 12784.0369993207. The cubic root of 163431602 is about 546.7372692043.

Adding to 163431602 its reverse (206134361), we get a palindrome (369565963).

The spelling of 163431602 in words is "one hundred sixty-three million, four hundred thirty-one thousand, six hundred two".