20310100 has 36 divisors (see below), whose sum is σ = 44622144. Its totient is φ = 8022880.

The previous prime is 20310091. The next prime is 20310119. The reversal of 20310100 is 101302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7077 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (1239504).

Almost surely, 2^20310100 is an apocalyptic number.

20310100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22311072).

20310100 is an abundant number, since it is smaller than the sum of its proper divisors (24312044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310100 is a wasteful number, since it uses less digits than its factorization.

20310100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 20310100 is about 4506.6728303705. The cubic root of 20310100 is about 272.8374743198.

Adding to 20310100 its reverse (101302), we get a palindrome (20411402).

The spelling of 20310100 in words is "twenty million, three hundred ten thousand, one hundred".