231513200500 has 96 divisors (see below), whose sum is σ = 507738067200. Its totient is φ = 92219254400.

The previous prime is 231513200473. The next prime is 231513200539. The reversal of 231513200500 is 5002315132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168617814 + ... + 168619186.

It is an arithmetic number, because the mean of its divisors is an integer number (5288938200).

Almost surely, 2^231513200500 is an apocalyptic number.

231513200500 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 231513200500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253869033600).

231513200500 is an abundant number, since it is smaller than the sum of its proper divisors (276224866700).

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

231513200500 is a wasteful number, since it uses less digits than its factorization.

231513200500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 231513200500 its reverse (5002315132), we get a palindrome (236515515632).

The spelling of 231513200500 in words is "two hundred thirty-one billion, five hundred thirteen million, two hundred thousand, five hundred".