231310230120 has 128 divisors (see below), whose sum is σ = 771519686400. Its totient is φ = 61643881728.

The previous prime is 231310230119. The next prime is 231310230139. The reversal of 231310230120 is 21032013132.

231310230120 is a `hidden beast` number, since 2 + 3 + 1 + 310 + 230 + 120 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 231310230093 and 231310230102.

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 31 ways as a sum of consecutive naturals, for example, 1668922 + ... + 1802198.

It is an arithmetic number, because the mean of its divisors is an integer number (6027497550).

Almost surely, 2^231310230120 is an apocalyptic number.

231310230120 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 231310230120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385759843200).

231310230120 is an abundant number, since it is smaller than the sum of its proper divisors (540209456280).

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

231310230120 is a wasteful number, since it uses less digits than its factorization.

231310230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134904 (or 134894 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231310230120 its reverse (21032013132), we get a palindrome (252342243252).

The spelling of 231310230120 in words is "two hundred thirty-one billion, three hundred ten million, two hundred thirty thousand, one hundred twenty".