231601830120 has 64 divisors (see below), whose sum is σ = 772006104000. Its totient is φ = 61760487744.

The previous prime is 231601830079. The next prime is 231601830121. The reversal of 231601830120 is 21038106132.

It is a happy number.

231601830120 is a `hidden beast` number, since 2 + 3 + 1 + 601 + 8 + 30 + 1 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (231601830121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107221990 + ... + 107224149.

It is an arithmetic number, because the mean of its divisors is an integer number (12062595375).

Almost surely, 2^231601830120 is an apocalyptic number.

231601830120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231601830120 is an abundant number, since it is smaller than the sum of its proper divisors (540404273880).

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

231601830120 is a wasteful number, since it uses less digits than its factorization.

231601830120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214446159 (or 214446149 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 231601830120 its reverse (21038106132), we get a palindrome (252639936252).

The spelling of 231601830120 in words is "two hundred thirty-one billion, six hundred one million, eight hundred thirty thousand, one hundred twenty".