20323130 has 8 divisors (see below), whose sum is σ = 36581652. Its totient is φ = 8129248.

The previous prime is 20323091. The next prime is 20323139. The reversal of 20323130 is 3132302.

It can be written as a sum of positive squares in 2 ways, for example, as 19193161 + 1129969 = 4381^2 + 1063^2 .

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

It is a super-2 number, since 2×20323130² = 826059225993800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20323139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1016147 + ... + 1016166.

Almost surely, 2^20323130 is an apocalyptic number.

20323130 is a deficient number, since it is larger than the sum of its proper divisors (16258522).

20323130 is a wasteful number, since it uses less digits than its factorization.

20323130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032320.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20323130 is about 4508.1182326998. The cubic root of 20323130 is about 272.8958083885.

Adding to 20323130 its reverse (3132302), we get a palindrome (23455432).

The spelling of 20323130 in words is "twenty million, three hundred twenty-three thousand, one hundred thirty".