20323115 has 12 divisors (see below), whose sum is σ = 24873744. Its totient is φ = 15940704.

The previous prime is 20323091. The next prime is 20323139. The reversal of 20323115 is 51132302.

It is an interprime number because it is at equal distance from previous prime (20323091) and next prime (20323139).

It is not a de Polignac number, because 20323115 - 2¹⁴ = 20306731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323093 and 20323102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13322 + ... + 14768.

It is an arithmetic number, because the mean of its divisors is an integer number (2072812).

Almost surely, 2^20323115 is an apocalyptic number.

20323115 is a deficient number, since it is larger than the sum of its proper divisors (4550629).

20323115 is an equidigital number, since it uses as much as digits as its factorization.

20323115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20323115 is about 4508.1165690341. The cubic root of 20323115 is about 272.8957412492.

Adding to 20323115 its reverse (51132302), we get a palindrome (71455417).

The spelling of 20323115 in words is "twenty million, three hundred twenty-three thousand, one hundred fifteen".