163540313 has 8 divisors (see below), whose sum is σ = 165120000. Its totient is φ = 161965440.

The previous prime is 163540301. The next prime is 163540319. The reversal of 163540313 is 313045361.

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

It is a cyclic number.

It is not a de Polignac number, because 163540313 - 2⁴ = 163540297 is a prime.

It is a super-2 number, since 2×163540313² = 53490867952275938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163540319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130313 + ... + 131561.

It is an arithmetic number, because the mean of its divisors is an integer number (20640000).

Almost surely, 2^163540313 is an apocalyptic number.

It is an amenable number.

163540313 is a deficient number, since it is larger than the sum of its proper divisors (1579687).

163540313 is a wasteful number, since it uses less digits than its factorization.

163540313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 163540313 is about 12788.2881184309. The cubic root of 163540313 is about 546.8584680847.

Adding to 163540313 its reverse (313045361), we get a palindrome (476585674).

The spelling of 163540313 in words is "one hundred sixty-three million, five hundred forty thousand, three hundred thirteen".