20831300010 has 64 divisors (see below), whose sum is σ = 57465676800. Its totient is φ = 5363459136.

The previous prime is 20831299997. The next prime is 20831300011. The reversal of 20831300010 is 1000313802.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20831300011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1322394 + ... + 1338053.

It is an arithmetic number, because the mean of its divisors is an integer number (897901200).

Almost surely, 2^20831300010 is an apocalyptic number.

20831300010 is an abundant number, since it is smaller than the sum of its proper divisors (36634376790).

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

20831300010 is a wasteful number, since it uses less digits than its factorization.

20831300010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660492 (or 2660486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20831300010 its reverse (1000313802), we get a palindrome (21831613812).

The spelling of 20831300010 in words is "twenty billion, eight hundred thirty-one million, three hundred thousand, ten".