20315327 has 4 divisors (see below), whose sum is σ = 20747616. Its totient is φ = 19883040.

The previous prime is 20315303. The next prime is 20315359. The reversal of 20315327 is 72351302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72351302 = 2 ⋅36175651.

It is a cyclic number.

It is not a de Polignac number, because 20315327 - 2⁶ = 20315263 is a prime.

It is a super-4 number, since 4×20315327⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315387) 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, 216074 + ... + 216167.

It is an arithmetic number, because the mean of its divisors is an integer number (5186904).

Almost surely, 2^20315327 is an apocalyptic number.

20315327 is a deficient number, since it is larger than the sum of its proper divisors (432289).

20315327 is an equidigital number, since it uses as much as digits as its factorization.

20315327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432288.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20315327 is about 4507.2527109094. The cubic root of 20315327 is about 272.8608780968.

Adding to 20315327 its reverse (72351302), we get a palindrome (92666629).

The spelling of 20315327 in words is "twenty million, three hundred fifteen thousand, three hundred twenty-seven".