231120512 has 32 divisors (see below), whose sum is σ = 526213920. Its totient is φ = 99051264.

The previous prime is 231120511. The next prime is 231120553. The reversal of 231120512 is 215021132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (231120511) 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, 128078 + ... + 129869.

It is an arithmetic number, because the mean of its divisors is an integer number (16444185).

Almost surely, 2^231120512 is an apocalyptic number.

It is an amenable number.

231120512 is an abundant number, since it is smaller than the sum of its proper divisors (295093408).

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

231120512 is an equidigital number, since it uses as much as digits as its factorization.

231120512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257968 (or 257956 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 231120512 is about 15202.6481903647. The cubic root of 231120512 is about 613.6859262272.

Adding to 231120512 its reverse (215021132), we get a palindrome (446141644).

The spelling of 231120512 in words is "two hundred thirty-one million, one hundred twenty thousand, five hundred twelve".