231301982100 has 144 divisors (see below), whose sum is σ = 765007286400. Its totient is φ = 52857361920.

The previous prime is 231301982057. The next prime is 231301982111. The reversal of 231301982100 is 1289103132.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 12651766 + ... + 12670034.

It is an arithmetic number, because the mean of its divisors is an integer number (5312550600).

Almost surely, 2^231301982100 is an apocalyptic number.

231301982100 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 231301982100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382503643200).

231301982100 is an abundant number, since it is smaller than the sum of its proper divisors (533705304300).

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

231301982100 is a wasteful number, since it uses less digits than its factorization.

231301982100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24322 (or 24315 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 231301982100 in words is "two hundred thirty-one billion, three hundred one million, nine hundred eighty-two thousand, one hundred".