123031320032 has 12 divisors (see below), whose sum is σ = 242217911376. Its totient is φ = 61515660000.

The previous prime is 123031320031. The next prime is 123031320059. The reversal of 123031320032 is 230023130321.

It is a junction number, because it is equal to n+sod(n) for n = 123031319986 and 123031320013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031320031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922364344 + ... + 1922364407.

It is an arithmetic number, because the mean of its divisors is an integer number (20184825948).

Almost surely, 2^123031320032 is an apocalyptic number.

It is an amenable number.

123031320032 is a deficient number, since it is larger than the sum of its proper divisors (119186591344).

123031320032 is an equidigital number, since it uses as much as digits as its factorization.

123031320032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844728761 (or 3844728753 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123031320032 its reverse (230023130321), we get a palindrome (353054450353).

The spelling of 123031320032 in words is "one hundred twenty-three billion, thirty-one million, three hundred twenty thousand, thirty-two".