123312560100 has 72 divisors (see below), whose sum is σ = 358206010848. Its totient is φ = 32752320000.

The previous prime is 123312560053. The next prime is 123312560123. The reversal of 123312560100 is 1065213321.

It is a super-2 number, since 2×123312560100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 743509 + ... + 894108.

It is an arithmetic number, because the mean of its divisors is an integer number (4975083484).

Almost surely, 2^123312560100 is an apocalyptic number.

123312560100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312560100 is an abundant number, since it is smaller than the sum of its proper divisors (234893450748).

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

123312560100 is a wasteful number, since it uses less digits than its factorization.

123312560100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637885 (or 1637878 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 123312560100 its reverse (1065213321), we get a palindrome (124377773421).

The spelling of 123312560100 in words is "one hundred twenty-three billion, three hundred twelve million, five hundred sixty thousand, one hundred".