123031101320 has 16 divisors (see below), whose sum is σ = 276819978060. Its totient is φ = 49212440512.

The previous prime is 123031101317. The next prime is 123031101331. The reversal of 123031101320 is 23101130321.

It can be written as a sum of positive squares in 2 ways, for example, as 115150278244 + 7880823076 = 339338^2 + 88774^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537888727 + ... + 1537888806.

Almost surely, 2^123031101320 is an apocalyptic number.

123031101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031101320 is an abundant number, since it is smaller than the sum of its proper divisors (153788876740).

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

123031101320 is a wasteful number, since it uses less digits than its factorization.

123031101320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075777544 (or 3075777540 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123031101320 its reverse (23101130321), we get a palindrome (146132231641).

The spelling of 123031101320 in words is "one hundred twenty-three billion, thirty-one million, one hundred one thousand, three hundred twenty".