172231705300 has 72 divisors (see below), whose sum is σ = 387161079480. Its totient is φ = 66457036800.

The previous prime is 172231705273. The next prime is 172231705403. The reversal of 172231705300 is 3507132271.

It can be written as a sum of positive squares in 12 ways, for example, as 155990241936 + 16241463364 = 394956^2 + 127442^2 .

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 128902 + ... + 600898.

It is an arithmetic number, because the mean of its divisors is an integer number (5377237215).

Almost surely, 2^172231705300 is an apocalyptic number.

172231705300 is a gapful number since it is divisible by the number (10) 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 172231705300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193580539740).

172231705300 is an abundant number, since it is smaller than the sum of its proper divisors (214929374180).

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

172231705300 is a wasteful number, since it uses less digits than its factorization.

172231705300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472141 (or 472134 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

Adding to 172231705300 its reverse (3507132271), we get a palindrome (175738837571).

The spelling of 172231705300 in words is "one hundred seventy-two billion, two hundred thirty-one million, seven hundred five thousand, three hundred".