231020204201100 has 72 divisors (see below), whose sum is σ = 742687174995920. Its totient is φ = 61605387786240.

The previous prime is 231020204201089. The next prime is 231020204201183. The reversal of 231020204201100 is 1102402020132.

It is a happy number.

231020204201100 is a `hidden beast` number, since 2 + 31 + 0 + 202 + 0 + 420 + 1 + 10 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42781516597 + ... + 42781521996.

Almost surely, 2^{231020204201100} is an apocalyptic number.

231020204201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231020204201100 is an abundant number, since it is smaller than the sum of its proper divisors (511666970794820).

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

231020204201100 is a wasteful number, since it uses less digits than its factorization.

231020204201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85563038616 (or 85563038603 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 231020204201100 its reverse (1102402020132), we get a palindrome (232122606221232).

The spelling of 231020204201100 in words is "two hundred thirty-one trillion, twenty billion, two hundred four million, two hundred one thousand, one hundred".