123231231120 has 80 divisors (see below), whose sum is σ = 382259319552. Its totient is φ = 32840801280.

The previous prime is 123231231107. The next prime is 123231231121. The reversal of 123231231120 is 21132132321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×123231231120³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123231231121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 217740 + ... + 542100.

Almost surely, 2^123231231120 is an apocalyptic number.

123231231120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231231120 is an abundant number, since it is smaller than the sum of its proper divisors (259028088432).

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

123231231120 is a wasteful number, since it uses less digits than its factorization.

123231231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325960 (or 325954 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123231231120 its reverse (21132132321), we get a palindrome (144363363441).

The spelling of 123231231120 in words is "one hundred twenty-three billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred twenty".