123231103020 has 288 divisors, whose sum is σ = 394377984000. Its totient is φ = 31103654400.

The previous prime is 123231103007. The next prime is 123231103027. The reversal of 123231103020 is 20301132321.

123231103020 is a `hidden beast` number, since 123 + 231 + 10 + 302 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123231102984 and 123231103002.

It is not an unprimeable number, because it can be changed into a prime (123231103027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 62268391 + ... + 62270369.

It is an arithmetic number, because the mean of its divisors is an integer number (1369368000).

Almost surely, 2^123231103020 is an apocalyptic number.

123231103020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123231103020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197188992000).

123231103020 is an abundant number, since it is smaller than the sum of its proper divisors (271146880980).

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

123231103020 is a wasteful number, since it uses less digits than its factorization.

123231103020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2248 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123231103020 its reverse (20301132321), we get a palindrome (143532235341).

The spelling of 123231103020 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred three thousand, twenty".