231120132 has 12 divisors (see below), whose sum is σ = 539280336. Its totient is φ = 77040040.

The previous prime is 231120119. The next prime is 231120133. The reversal of 231120132 is 231021132.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (231120133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9629994 + ... + 9630017.

It is an arithmetic number, because the mean of its divisors is an integer number (44940028).

Almost surely, 2^231120132 is an apocalyptic number.

It is an amenable number.

231120132 is an abundant number, since it is smaller than the sum of its proper divisors (308160204).

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

231120132 is a wasteful number, since it uses less digits than its factorization.

231120132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19260018 (or 19260016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231120132 is about 15202.6356925370. The cubic root of 231120132 is about 613.6855898936.

Adding to 231120132 its reverse (231021132), we get a palindrome (462141264).

The spelling of 231120132 in words is "two hundred thirty-one million, one hundred twenty thousand, one hundred thirty-two".