231120123020 has 24 divisors (see below), whose sum is σ = 485389333968. Its totient is φ = 92440987200.

The previous prime is 231120122953. The next prime is 231120123029. The reversal of 231120123020 is 20321021132.

231120123020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231120123020² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231120123020.

It is not an unprimeable number, because it can be changed into a prime (231120123029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168911 + ... + 700550.

It is an arithmetic number, because the mean of its divisors is an integer number (20224555582).

Almost surely, 2^231120123020 is an apocalyptic number.

231120123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231120123020 is an abundant number, since it is smaller than the sum of its proper divisors (254269210948).

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

231120123020 is a wasteful number, since it uses less digits than its factorization.

231120123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882761 (or 882759 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 231120123020 its reverse (20321021132), we get a palindrome (251441144152).

The spelling of 231120123020 in words is "two hundred thirty-one billion, one hundred twenty million, one hundred twenty-three thousand, twenty".