123031401220 has 48 divisors (see below), whose sum is σ = 317988857088. Its totient is φ = 38937409920.

The previous prime is 123031401179. The next prime is 123031401221. The reversal of 123031401220 is 22104130321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123031401221) 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, 33798016 + ... + 33801655.

It is an arithmetic number, because the mean of its divisors is an integer number (6624767856).

Almost surely, 2^123031401220 is an apocalyptic number.

123031401220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031401220 is an abundant number, since it is smaller than the sum of its proper divisors (194957455868).

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

123031401220 is a wasteful number, since it uses less digits than its factorization.

123031401220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67599700 (or 67599698 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123031401220 its reverse (22104130321), we get a palindrome (145135531541).

The spelling of 123031401220 in words is "one hundred twenty-three billion, thirty-one million, four hundred one thousand, two hundred twenty".