20313300 has 144 divisors (see below), whose sum is σ = 71245440. Its totient is φ = 4362240.

The previous prime is 20313281. The next prime is 20313343. The reversal of 20313300 is 331302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35416 + ... + 35984.

It is an arithmetic number, because the mean of its divisors is an integer number (494760).

Almost surely, 2^20313300 is an apocalyptic number.

20313300 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 20313300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35622720).

20313300 is an abundant number, since it is smaller than the sum of its proper divisors (50932140).

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

20313300 is a wasteful number, since it uses less digits than its factorization.

20313300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20313300 is about 4507.0278454875. The cubic root of 20313300 is about 272.8518027257.

Adding to 20313300 its reverse (331302), we get a palindrome (20644602).

The spelling of 20313300 in words is "twenty million, three hundred thirteen thousand, three hundred".