231200121130 has 128 divisors (see below), whose sum is σ = 478158681600. Its totient is φ = 79715328000.

The previous prime is 231200121109. The next prime is 231200121133. The reversal of 231200121130 is 31121002132.

231200121130 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231200121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42867714 + ... + 42873106.

It is an arithmetic number, because the mean of its divisors is an integer number (3735614700).

Almost surely, 2^231200121130 is an apocalyptic number.

231200121130 is an abundant number, since it is smaller than the sum of its proper divisors (246958560470).

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

231200121130 is a wasteful number, since it uses less digits than its factorization.

231200121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231200121130 its reverse (31121002132), we get a palindrome (262321123262).

The spelling of 231200121130 in words is "two hundred thirty-one billion, two hundred million, one hundred twenty-one thousand, one hundred thirty".