163515313 has 4 divisors (see below), whose sum is σ = 176093428. Its totient is φ = 150937200.

The previous prime is 163515301. The next prime is 163515323. The reversal of 163515313 is 313515361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27279729 + 136235584 = 5223^2 + 11672^2 .

It is a cyclic number.

It is not a de Polignac number, because 163515313 - 2¹⁷ = 163384241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163515323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6289038 + ... + 6289063.

It is an arithmetic number, because the mean of its divisors is an integer number (44023357).

Almost surely, 2^163515313 is an apocalyptic number.

163515313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163515313 is a deficient number, since it is larger than the sum of its proper divisors (12578115).

163515313 is a wasteful number, since it uses less digits than its factorization.

163515313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12578114.

The product of its digits is 4050, while the sum is 28.

The square root of 163515313 is about 12787.3106242087. The cubic root of 163515313 is about 546.8306010344.

The spelling of 163515313 in words is "one hundred sixty-three million, five hundred fifteen thousand, three hundred thirteen".