123012313100 has 54 divisors (see below), whose sum is σ = 276459026844. Its totient is φ = 47508171200.

The previous prime is 123012313093. The next prime is 123012313139. The reversal of 123012313100 is 1313210321.

It is a super-2 number, since 2×123012313100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 647246 + ... + 815445.

Almost surely, 2^123012313100 is an apocalyptic number.

123012313100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123012313100 is an abundant number, since it is smaller than the sum of its proper divisors (153446713744).

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

123012313100 is a wasteful number, since it uses less digits than its factorization.

123012313100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462763 (or 1462727 counting only the distinct ones).

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

Adding to 123012313100 its reverse (1313210321), we get a palindrome (124325523421).

The spelling of 123012313100 in words is "one hundred twenty-three billion, twelve million, three hundred thirteen thousand, one hundred".