123310120100 has 18 divisors (see below), whose sum is σ = 267582960834. Its totient is φ = 49324048000.

The previous prime is 123310120069. The next prime is 123310120111. The reversal of 123310120100 is 1021013321.

It can be written as a sum of positive squares in 3 ways, for example, as 10774024804 + 112536095296 = 103798^2 + 335464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616550501 + ... + 616550700.

Almost surely, 2^123310120100 is an apocalyptic number.

123310120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123310120100 is an abundant number, since it is smaller than the sum of its proper divisors (144272840734).

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

123310120100 is a wasteful number, since it uses less digits than its factorization.

123310120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233101215 (or 1233101208 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 123310120100 its reverse (1021013321), we get a palindrome (124331133421).

The spelling of 123310120100 in words is "one hundred twenty-three billion, three hundred ten million, one hundred twenty thousand, one hundred".